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https://www.readbyqxmd.com/read/28623784/antihypertensive-and-vasodilator-effects-of-methanolic-extract-of-inula-viscosa-biological-evaluation-and-pom-analysis-of-cynarin-chlorogenic-acid-as-potential-hypertensive
#1
Zineb Hakkou, Alexandre Maciuk, Veronique Leblais, Nour Elhouda Bouanani, Hassane Mekhfi, Mohammed Bnouham, Mohammed Aziz, Abderrahime Ziyyat, Abdur Rauf, Taibi Ben Hadda, Usama Shaheen, Seema Patel, Rodolphe Fischmeister, Abdelkhaleq Legssyer
BACKGROUND: Inula viscosa L. (Asteraceae) is a medicinal plant widely used as a folk medicine in oriental Morocco, to treat hypertension. The antihypertensive effect of the methanolic extract obtained from I. viscosa leaves was evaluated in hypertensive L-NAME rats. Systolic blood pressure (SBP) was measured using a non-invasive indirect tail-cuff plethysmographic method. Four groups of rats were used: a control group; a hypertensive group treated with L-NAME (32mg/kg/day); a positive control group treated with L-NAME plus enalapril (15mg/kg/day) as a reference antihypertensive agent; and a group treated with L-NAME plus MeOH-extract (40mg/kg/day)...
June 14, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28621890/reference-data-for-babybody-plethysmographic-measurements-in-chinese-neonates-and-infants
#2
Gaoli Jiang, Albert Li, Libo Wang, Liling Qian, Yun Cao, Jianfeng Huang, Chengzhou Wan, Xiaobo Zhang
BACKGROUND AND OBJECTIVE: Population-specific pulmonary function reference data are essential to identify the nature and severity of respiratory diseases. However, there is a lack of reference data for Chinese neonates and infants. The objective of this study was to develop reference data for tidal breathing and plethysmographic measurements for Chinese subjects during the first 2 years of life. METHODS: Data of tidal breathing and plethysmography from healthy Chinese neonates (≤28 days) and infants (1-24 months) using the Jaeger MasterScreen BabyBody were collated...
June 16, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28614095/the-value-of-dynamic-preload-variables-during-spontaneous-ventilation
#3
Azriel Perel
PURPOSE OF REVIEW: To discuss the physiological significance and clinical value of dynamic preload variables in spontaneously breathing patients. RECENT FINDINGS: Dynamic preload variables reflect the response of the cardiac output to a modification of preload and can therefore be used to assess fluid responsiveness. Continuous dynamic parameters that are calculated from the variations in the arterial and plethysmographic waveforms following a mechanical breath have been shown to predict fluid responsiveness much better than static preload parameters...
June 12, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28571131/systemic-and-local-effects-of-warm-oxygen-exposure-to-the-lower-extremities-in-healthy-volunteers
#4
Vidya Sunil Joshi, Sunil Subhash Joshi, Maruthy
INTRODUCTION: Warmth to the extremity is known to improve the cutaneous blood flow and tissue perfusion. Oxygen is essential for healing of chronic wounds. Topical oxygen therapy has become standard therapy in management of lower extremity wounds. A combination of local heat and oxygen is likely to be beneficial in many clinical scenarios of non-healing wounds without any systemic effects. AIM: To evaluate the local and systemic effects of the exposure of extremity to warm oxygen in healthy volunteers...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28541913/virtual-spirometry-and-activity-monitoring-using-multichannel-electrical-impedance-plethysmographs-in-ambulatory-settings
#5
Hassan Aqeel Khan, Amit Gore, Jeffrey Ashe, Shantanu Chakrabartty
Continuous monitoring of respiratory patterns and physical activity levels can be useful for remote health management of patients with conditions such as heart disease and chronic obstructive pulmonary disease. In a clinical setting, spirometers serve as the gold standard for monitoring respiratory patterns such as breathing rate and changes in lung volume. However, direct measurements using a spirometer requires placement of a sensor in the patient's airway and is thus infeasible for continuous monitoring in nonclinical, ambulatory settings...
May 23, 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28539201/the-association-between-ghrelin-levels-and-markers-of-arterial-stiffness-and-inflammatory-markers-in-saudi-subjects-with-metabolic-syndrome
#6
Tarek Mohamed Ali, Osama Mahmoud Mehanna, Ahmad El Askary
BACKGROUND: Arterial stiffness is a principal cardiovascular risk factor. Metabolic syndrome (MetS) is a predisposing factor to arterial stiffness and persistent MetS circumstances can deteriorate the arterial stiffness severity. Low concentrations of plasma ghrelin are meticulously connected to arterial stiffness. This work targeted to judge the relationship between plasma ghrelin levels and intima-media thickness (IMT) and brachial-ankle pulse wave velocity (baPWV) as markers of arterial stiffness and inflammatory markers and in Saudi subjects with MetS...
May 12, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28444339/comparison-of-plethysmographic-and-helium-dilution-lung-volumes-in-patients-with-a-giant-emphysematous-bulla-as-selection-criteria-for-endobronchial-valve-implant%C3%A2
#7
Alfonso Fiorelli, Roberto Scaramuzzi, Matteo Pierdiluca, Elisabetta Frongillo, Gaetana Messina, Nicola Serra, Alberto De Felice, Mario Santini
OBJECTIVES: To assess whether the difference in lung volume measured with plethysmography and with the helium dilution technique could differentiate an open from a closed bulla in patients with a giant emphysematous bulla and could be used as a selection criterion for the positioning of an endobronchial valve. METHODS: We reviewed the data of 27 consecutive patients with a giant emphysematous bulla undergoing treatment with an endobronchial valve. In addition to standard functional and radiological examinations, total lung capacity and residual volume were measured with the plethysmographic and helium dilution technique...
April 24, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28418337/a-simple-measure-to-assess-hyperinflation-and-air-trapping-1-forced-expiratory-volume-in-three-second-forced-vital-capacity
#8
Sermin Börekçi, Tunçalp Demir, Aslı Görek Dilektaşlı, Melahat Uygun, Nurhayat Yıldırım
BACKGROUND: Several recent studies have suggested that 1 minus-forced expiratory volume expired in 3 seconds / forced vital capacity (1-FEV3/FVC) may be an indicator of distal airway obstruction and a promising measure to evaluate small airways dysfunction. AIMS: To investigate the associations of 1-FEV3/FVC with the spirometric measures and lung volumes that assess small airways dysfunction and reflects hyperinflation and air trapping. STUDY DESIGN: Retrospective cross-sectional study...
April 5, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28409004/effect-of-%C3%AE-blockade-on-lung-function-exercise-performance-and-dynamic-hyperinflation-in-people-with-arterial-vascular-disease-with-and-without-copd
#9
Angela Key, Matthew Parry, Malcolm A West, Rebecca Asher, Sandy Jack, Nick Duffy, Francesco Torella, Paul P Walker
INTRODUCTION: β Blockers are important treatment for ischaemic heart disease and heart failure; however, there has long been concern about their use in people with chronic obstructive pulmonary disease (COPD) due to fear of symptomatic worsening of breathlessness. Despite growing evidence of safety and efficacy, they remain underused. We examined the effect of β-blockade on lung function, exercise performance and dynamic hyperinflation in a group of vascular surgical patients, a high proportion of who were expected to have COPD...
2017: BMJ Open Respiratory Research
https://www.readbyqxmd.com/read/28377702/brain-acetaldehyde-exposure-impacts-upon-neonatal-respiratory-plasticity-and-ethanol-related-learning-in-rodents
#10
María B Acevedo, Génesis D'Aloisio, Olga B Haymal, Juan C Molina
Prior studies indicate that neonates are very sensitive to ethanol's positive reinforcing effects and to its depressant effects upon breathing. Acetaldehyde (ACD) appears to play a major role in terms of modulating early reinforcing effects of the drug. Yet, there is no pre-existing literature relative to the incidence of this metabolite upon respiratory plasticity. The present study analyzed physiological and behavioral effects of early central administrations of ethanol, acetaldehyde or vehicle. Respiration rates (breaths/min) were registered at post-natal days (PDs) 2 and 4 (post-administration time: 5, 60, or 120 min)...
2017: Frontiers in Behavioral Neuroscience
https://www.readbyqxmd.com/read/28330429/effects-of-inhaled-aerosolized-carfentanil-on-real-time-physiological-responses-in-mice-a-preliminary-evaluation-of-naloxone
#11
Benjamin Wong, Michael W Perkins, Justin Tressler, Ashley Rodriguez, Jennifer Devorak, Alfred M Sciuto
This study examined the real-time exposure-response effects of aerosolized carfentanil (CRF) on opioid-induced toxicity, respiratory dynamics and cardiac function in mice. Unrestrained, conscious male CD-1 mice (25-30 g) were exposed to 0.4 or 4.0 mg/m(3) of aerosolized CRF for 15 min (Ct = 6 or 60 mg min/m(3)) in a whole-body plethysmograph chamber. Minute volume (MV), core body temperature (Tc), mean arterial blood pressure (MAP) and heart rate (HR) were evaluated in animals exposed to CRF or sterile H2O...
February 2017: Inhalation Toxicology
https://www.readbyqxmd.com/read/28329750/optoelectronic-plethysmography-in-clinical-practice-and-research-a-review
#12
Carlo Massaroni, Elena Carraro, Andrea Vianello, Sandra Miccinilli, Michelangelo Morrone, Irisz K Levai, Emiliano Schena, Paola Saccomandi, Silvia Sterzi, John W Dickinson, Samantha Winter, Sergio Silvestri
BACKGROUND: Optoelectronic plethysmography (OEP) is a non-invasive motion capture method to measure chest wall movements and estimate lung volumes. OBJECTIVES: To provide an overview of the clinical findings and research applications of OEP in the assessment of breathing mechanics across populations of healthy and diseased individuals. METHODS: A bibliographic research was performed with the terms "opto-electronic plethysmography," "optoelectronic plethysmography," and "optoelectronic plethysmograph" in 50 digital library and bibliographic search databases resulting in the selection of 170 studies...
2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28318340/characteristic-plethysmographic-findings-in-a-guinea-pig-model-of-copd
#13
Edgar Ramírez-Ramírez, Armando Torres-Ramírez, Jesús Alquicira-Mireles, Abraham Cañavera-Constantino, Patricia Segura-Medina, Martha Montaño-Ramírez, Carlos Ramos-Abraham, Mario H Vargas, José Luis Arreola-Ramírez
AIM OF THE STUDY: Long-term exposure to cigarette smoke generates chronic obstructive pulmonary disease (COPD) in guinea pigs, but a comprehensive evaluation of changes in lung function, as assessed by barometric whole body plethysmography (WBP), is lacking. MATERIALS AND METHODS: Female guinea pigs were exposed to the smoke of 20 cigarettes/day, 5 days/week, during 10 weeks (COPD group, n = 8), and were compared with unexposed female guinea pigs of the same age (control group, n = 8)...
March 2017: Experimental Lung Research
https://www.readbyqxmd.com/read/28294169/comparison-of-body-adiposity-index-bai-and-air-displacement-plethysmograph-with-estimations-of-body-fat-in-adults-with-down-s-syndrome
#14
M Rossato, R A Dellagrana, E de Souza Bezerra, R M da Costa, J O L Dos Santos, D A S Silva, F Diefenthaeler
BACKGROUND/OBJECTIVES: The aim of this study was to verify the agreement between body fat percentage (%BF) values evaluated by air displacement plethysmograph (ADP) and body adiposity index (BAI) in adults with Down's syndrome (DS). SUBJECTS/METHODS: Forty-five adults with DS volunteered to participate in this study (19 women; age 28.7±8.5 years and 26 men; age 29.1±8.8 years). The %BF was measured by ADP (%BFADP) and estimated by anthropometric measures [%BF=(hip circumference/height)(1...
March 15, 2017: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28289632/hemodynamic-adaptations-to-regular-exercise-in-people-with-spinal-cord-injury
#15
Young Hee Lee, Jin Hyeong Lee, Sung Hoon Kim, Dongsoo Yi, Kyung Joon Oh, Ji Hyun Kim, Tae Jun Park, Hanul Kim, Jae Seung Chang, In Deok Kong
OBJECTIVE: To investigate the real-time cardiovascular response to the progressive overload exercise in different levels of spinal cord injury (SCI), and to find out whether regular exercise has effect on these cardiovascular responses. METHODS: The study enrolled 8 able-bodied individuals in the control group plus 15 SCI subjects who were divided into two groups by their neurological level of injury: high-level SCI group (T6 or above) and low-level SCI group (T7 or below)...
February 2017: Annals of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28269362/non-invasive-heart-rate-monitoring-system-using-giant-magneto-resistance-sensor
#16
Kubera Kalyan, Vinit Kumar Chugh, C S Anoop
A simple heart rate (HR) monitoring system designed and developed using the Giant Magneto-Resistance (GMR) sensor is presented in this paper. The GMR sensor is placed on the wrist of the human and it provides the magneto-plethysmographic signal. This signal is processed by the simple analog and digital instrumentation stages to render the heart rate indication. A prototype of the system has been built and test results on 26 volunteers have been reported. The error in HR estimation of the system is merely 1 beat per minute...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268792/feasibility-study-of-a-giant-magneto-resistance-based-respiration-rate-monitor
#17
Vinit Kumar Chugh, Kubera Kalyan, C S Anoop
This paper reports a simple and reliable electronic technique for the estimation of respiration rate (RR). Giant Magneto-Resistance (GMR) based sensors are employed to extract a plethysmograph signal from the subject. This signal is filtered and processed further through simple signal processing stages to obtain RR indication. The feasibility of the system has been studied on a prototype built and associated experimentation on 20 volunteers. The developed system provided clean plethysmographic signals, whose relevant features are shown to possess a relation with RR...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268478/comparison-of-pulse-rate-variability-and-heart-rate-variability-for-high-frequency-content-estimation
#18
R Logier, J De Jonckheere, A Dassonneville, M Jeanne
Heart Rate Variability (HRV) analysis can be of precious help in most of clinical situations because it is able to quantify the Autonomic Nervous System (ANS) activity. The HRV high frequency (HF) content, related to the parasympathetic tone, reflects the ANS response to an external stimulus responsible of pain, stress or various emotions. We have previously developed the Analgesia Nociception Index (ANI), based on HRV high frequency content estimation, which quantifies continuously the vagal tone in order to guide analgesic drug administration during general anesthesia...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28245206/cerebrovascular-and-cardiovascular-variability-interactions-investigated-through-conditional-joint-transfer-entropy-in-subjects-prone-to-postural-syncope
#19
Vlasta Bari, Beatrice De Maria, Claudio Enrico Mazzucco, Gianluca Rossato, Davide Tonon, Giandomenico Nollo, Luca Faes, Alberto Porta
OBJECTIVE: A model-based conditional transfer entropy approach was exploited to quantify the information transfer in cerebrovascular (CBV) and cardiovascular (CV) systems in subjects prone to develop postural syncope. APPROACH: Spontaneous beat-to-beat variations of mean cerebral blood flow velocity (MCBFV) derived from a transcranial Doppler device, heart period (HP) derived from surface electrocardiogram, mean arterial pressure (MAP) and systolic arterial pressure (SAP) derived from finger plethysmographic arterial pressure device were monitored at rest in supine position (REST) and during 60° head-up tilt (TILT) in 13 individuals (age mean  ±  standard deviation: 28  ±  9 years, min-max range: 18-44 years, 5 males) with a history of recurrent episodes of syncope (SYNC) and in 13 age- and gender-matched controls (NonSYNC)...
May 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28227604/non-invasive-heart-rate-monitoring-system-using-giant-magneto-resistance-sensor
#20
Kubera Kalyan, Vinit Kumar Chugh, C S Anoop, Kubera Kalyan, Vinit Kumar Chugh, C S Anoop, Vinit Kumar Chugh, Kubera Kalyan, C S Anoop
A simple heart rate (HR) monitoring system designed and developed using the Giant Magneto-Resistance (GMR) sensor is presented in this paper. The GMR sensor is placed on the wrist of the human and it provides the magneto-plethysmographic signal. This signal is processed by the simple analog and digital instrumentation stages to render the heart rate indication. A prototype of the system has been built and test results on 26 volunteers have been reported. The error in HR estimation of the system is merely 1 beat per minute...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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