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https://www.readbyqxmd.com/read/28941598/energy-matched-moderate-and-high-intensity-exercise-training-improves-nonalcoholic-fatty-liver-disease-risk-independent-of-changes-in-body-mass-or-abdominal-adiposity-a-randomized-trial
#1
Nathan C Winn, Liu Ying, R Scott Rector, Elizabeth J Parks, Jamal A Ibdah, Jill A Kanaley
BACKGROUND AND PURPOSE: Exercise training is commonly prescribed for individuals diagnosed with nonalcoholic fatty liver disease (NAFLD); however, consensus regarding the volume and intensity of exercise for optimal benefits is lacking. Thus, we determined whether high intensity interval exercise training (HIIT) produced greater reductions in intrahepatic lipid (IHL) content and NAFLD risk factors compared with energy-matched moderate intensity continuous exercise training (MICT) in obese adults with liver steatosis...
September 20, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28940670/deoxygenation-of-inspiratory-muscles-during-cycling-hyperpnoea-and-loaded-breathing-in-health-and-disease-a-systematic-review
#2
REVIEW
Takako Tanaka, Nada Basoudan, Luana T Melo, Lisa Wickerson, Laurent J Brochard, Ewan C Goligher, W Darlene Reid
Assessing inspiratory muscle deoxygenation and blood flow can provide insight into anaerobic stress, recruitment strategies and mechanisms of inspiratory muscle limitation. Therefore, this review aimed to synthesize measurements of inspiratory muscle oxyhaemoglobin (O2 Hb), deoxyhaemoglobin (HHb), blood volume and flow of the inspiratory muscles acquired via near-infrared spectroscopy (NIRS) during cycling, hyperpnoea and loaded breathing in healthy non-athletes, healthy athletes and patients with chronic obstructive pulmonary disease (COPD) or chronic heart failure (CHF)...
September 22, 2017: Clinical Physiology and Functional Imaging
https://www.readbyqxmd.com/read/28939189/cerebral-blood-flow-velocity-positively-correlates-with-brain-volumes-in-long-term-remitted-depression
#3
Thomas Desmidt, Frédéric Andersson, Bruno Brizard, Jean-Philippe Cottier, Frédéric Patat, Valérie Gissot, Catherine Belzung, Wissam El-Hage, Vincent Camus
BACKGROUND: Mechanisms involved in brain changes observed in major depression have been poorly investigated in clinical populations. Changes in cerebral blood flow (CBF) have been found in depressed patients and constitute a potential mechanism by which brain volume varies in depression. We have tested the association of cerebral blood flow velocity (CBFV) as assessed with Transcranial Doppler (TCD) and cerebral blood flow (CBF) as assessed with Arterial Spin Labeling Magnetic Resonance Imaging (ASL-MRI) with Total Brain Volume (TBV) and the volume of seven subcortical regions, in currently depressed and long-term remitted patients...
September 19, 2017: Progress in Neuro-psychopharmacology & Biological Psychiatry
https://www.readbyqxmd.com/read/28937241/preejection-period-as-a-sympathetic-activity-index-a-role-of-confounding-factors
#4
J Krohova, B Czippelova, Z Turianikova, Z Lazarova, I Tonhajzerova, M Javorka
In previous studies, one of the systolic time intervals - preejection period (PEP) - was used as an index of sympathetic activity reflecting the cardiac contractility. However, PEP could be also influenced by several other cardiovascular variables including preload, afterload and diastolic blood pressure (DBP). The aim of this study was to assess the behavior of the PEP together with other potentially confounding cardiovascular system characteristics in healthy humans during mental and orthostatic stress (head-up tilt test - HUT)...
September 22, 2017: Physiological Research
https://www.readbyqxmd.com/read/28936954/-role-of-serum-s1p-levels-during-asthma-attack-in-the-evaluation-of-asthma-severity
#5
Yunwei Zhao, Yiqin Xu, Shuang Li, Yu Wei, Chunling Wang
OBJECTIVE: To observe the changes of serum sphingosine-1-phosphate (S1P) level in asthmatic patients with different severity of bronchial asthma, and to explore the evaluation value of S1P on the severity of asthma. METHODS: A prospective observational study was conducted. Fifty-two patients with asthma admitted to Department of Respiratory Medicine of the First Affiliated Hospital of Jiamusi University from November 2015 to January 2017 were enrolled. According to the severity of the disease, the patients were divided into mild, moderate and severe groups...
September 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28935983/model-based-vascular-elastography-improves-the-detection-of-flow-induced-carotid-artery-remodeling-in-mice
#6
Vyacheslav A Korshunov, Hexuan Wang, Rifat Ahmed, Deanne M Mickelsen, Qian Zhou, Chen Yan, Marvin M Doyley
Increased arterial thickness measured with ultrasound correlates with future cardiovascular events, but conventional ultrasound imaging techniques cannot distinguish between intima, media, or atherosclerotic plaque in the carotid artery. In this work, we evaluated how well vascular elastography can detect intimal changes in a mouse model of carotid remodeling. We ligated the left external and internal branches of the carotid artery of male FVB mice and performed sham operations for 2 weeks. High-resolution ultrasound imaging accurately detected lower blood velocities and low blood volume flow in the carotid arteries after ligation in FVB mice...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28934833/hemodynamic-analysis-of-radiation-induced-damage-in-common-carotid-arteries-by-using-color-doppler-ultrasonography
#7
Alireza Mohammadkarim, Manijhe Mokhtari-Dizaji, Ali Kazemian, Hazhir Saberi
Purpose: The aim of this study was to assess vascular changes and blood flow abnormalities in the common carotid arteries of patients with head and neck cancers after external radiotherapy, using color Doppler ultrasonography. Methods: We studied 24 patients treated with external radiotherapy for various head and neck cancers. In order to study the acute effects of irradiation on common carotid blood flow and arterial diameter changes, color Doppler ultrasonography parameters such as peak systolic velocity, end diastolic velocity, mean velocity, systolic-to-diastolic velocity (S/D) ratio, pulsatility index (PI), resistive index (RI), and instantaneous diameter changes were evaluated before and after external radiotherapy...
April 14, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28934227/hemorrhage-enhances-cytokine-complement-component-3-and-caspase-3-and-regulates-micrornas-associated-with-intestinal-damage-after-whole-body-gamma-irradiation-in-combined-injury
#8
Juliann G Kiang, Joan T Smith, Marsha N Anderson, Thomas B Elliott, Paridhi Gupta, Nagaraja S Balakathiresan, Radha K Maheshwari, Barbara Knollmann-Ritschel
Hemorrhage following whole-body γ-irradiation in a combined injury (CI) model increases mortality compared to whole-body γ-irradiation alone (RI). The decreased survival in CI is accompanied by increased bone marrow injury, decreased hematocrit, and alterations of miRNA in the kidney. In this study, our aim was to examine cytokine homeostasis, susceptibility to systemic bacterial infection, and intestinal injury. More specifically, we evaluated the interleukin-6 (IL-6)-induced stress proteins including C-reactive protein (CRP), complement 3 (C3), Flt-3 ligand, and corticosterone...
2017: PloS One
https://www.readbyqxmd.com/read/28934226/pathological-alterations-in-liver-injury-following-congestive-heart-failure-induced-by-volume-overload-in-rats
#9
Mohammed Shaqura, Doaa M Mohamed, Noureddin B Aboryag, Lama Bedewi, Lukas Dehe, Sascha Treskatsch, Mehdi Shakibaei, Michael Schäfer, Shaaban A Mousa
Heart failure has emerged as a disease with significant public health implications. Following progression of heart failure, heart and liver dysfunction are frequently combined in hospitalized patients leading to increased morbidity and mortality. Here, we investigated the underlying pathological alterations in liver injury following heart failure. Heart failure was induced using a modified infrarenal aortocaval fistula (ACF) in male Wistar rats. Sham operated and ACF rats were compared for their morphometric and hemodynamic data, for histopathological and ultrastructural changes in the liver as well as differences in the expression of apoptotic factors...
2017: PloS One
https://www.readbyqxmd.com/read/28933018/-18-f-fluoromisonidazole-pet-in-rectal-cancer
#10
Tanuj Puri, Tessa A Greenhalgh, James M Wilson, Jamie Franklin, Lia Mun Wang, Victoria Strauss, Chris Cunningham, Mike Partridge, Tim Maughan
BACKGROUND: There is an increasing interest in developing predictive biomarkers of tissue hypoxia using functional imaging for personalised radiotherapy in patients with rectal cancer that are considered for neoadjuvant chemoradiotherapy (CRT). The study explores [(18)F]fluoromisonidazole ([(18)F]FMISO) positron emission tomography (PET) scans for predicting clinical response in rectal cancer patients receiving neoadjuvant CRT. METHODS: Patients with biopsy-proven rectal adenocarcinoma were imaged at 0-45 min, 2 and 4 h, at baseline and after 8-10 fractions of CRT (week 2)...
September 20, 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28932409/serum-retinol-levels-are-associated-with-brain-volume-loss-in-patients-with-multiple-sclerosis
#11
H Yokote, T Kamata, S Toru, N Sanjo, T Yokota
BACKGROUND: Although predicting future brain volume loss (BVL) in patients with multiple sclerosis (MS) is important, studies have shown only a few biomarkers that can predict BVL. OBJECTIVES: The aim of this study is to elucidate the association between longitudinal BVL and serum biomarker candidates. METHODS: This single-center, retrospective, observational study intended to cover MS patients during January 2008 to March 2016. Patients who underwent brain MRI two times at intervals of >24 months and had a blood test to measure biomarker candidates at the time or within three months of the MRI scan were included...
July 2017: Multiple Sclerosis Journal—Experimental, Translational and Clinical
https://www.readbyqxmd.com/read/28931052/improvement-of-dyspnea-after-bariatric-surgery-is-associated-with-increased-expiratory-reserve-volume-a-prospective-follow-up-study-of-45-patients
#12
Louis Boissière, Jeanne-Marie Perotin-Collard, Eric Bertin, Isabelle Gaubil, Ana Diaz Cives, Coralie Barbe, Sandra Dury, Julie Nardi, François Lebargy, Gaëtan Deslée, Claire Launois
OBJECTIVES: To assess the effects of bariatric surgery in patients with obesity on dyspnea and to analyze the relationships between improvement of dyspnea after bariatric surgery and changes in pulmonary function, especially Expiratory Reserve Volume (ERV) which is the lung volume abnormality most frequently associated with obesity. METHODS: Forty-five patients (5 males/40 females, mean Body Mass Index = 46.2 ± 6.8 kg/m2) were evaluated before and 6 to 12 months after bariatric surgery...
2017: PloS One
https://www.readbyqxmd.com/read/28930815/variability-in-usual-care-mechanical-ventilation-for-pediatric-acute-respiratory-distress-syndrome-time-for-a-decision-support-protocol
#13
Christopher J L Newth, Katherine A Sward, Robinder G Khemani, Kent Page, Kathleen L Meert, Joseph A Carcillo, Thomas P Shanley, Frank W Moler, Murray M Pollack, Heidi J Dalton, David L Wessel, John T Berger, Robert A Berg, Rick E Harrison, Richard Holubkov, Allan Doctor, J Michael Dean, Tammara L Jenkins, Carol E Nicholson
OBJECTIVES: Although pediatric intensivists philosophically embrace lung protective ventilation for acute lung injury and acute respiratory distress syndrome, we hypothesized that ventilator management varies. We assessed ventilator management by evaluating changes to ventilator settings in response to blood gases, pulse oximetry, or end-tidal CO2. We also assessed the potential impact that a pediatric mechanical ventilation protocol adapted from National Heart Lung and Blood Institute acute respiratory distress syndrome network protocols could have on reducing variability by comparing actual changes in ventilator settings to those recommended by the protocol...
September 19, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/28929662/-effect-of-astragaloside-on-mrna-expression-of-pi3k-akt-mtor-signal-transduction-in-anemia-model-mice-induced-by-chemotherapy
#14
Tie Qiao, Ke Liang, Jin Ma, Shu-Ru Lin, Bing-Yuan Zheng, Li-de Zhang
To study the influence of astragaloside on mRNA expression of PI3K/Akt/mTOR signal transduction in anemia model mice induced by chemotherapy, 48 male BALB/c mice which were 6-7 week old were picked as the research objects and randomly divided into four groups, blank group, model group, astragaloside group and astragaloside IV group. Each group was 12 mice. Chemotherapy anemia model was established by cyclophosphamide. The mice were drawn blood from eyeball after 14 days treatment. The QPCR was used to test the mRNA concentrations of Akt, PI3K, BCL-xl, bad, FoxO, mTOR, PTEN in mouse spleen...
October 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929512/systematic-design-of-a-magnetically-levitated-brushless-dc-motor-for-a-reversible-rotary-intra-aortic-blood-pump
#15
Yaxin Wang, Thomas G Logan, P Alex Smith, Po-Lin Hsu, William E Cohn, Liping Xu, Richard A McMahon
The IntraVAD is a miniature intra-aortic ventricular assist device (VAD) designed to work in series with the compromised left ventricle. A reverse-rotation control (RRc) mode has been developed to increase myocardial perfusion and reduce ventricular volume. The RRc mode includes forward rotation in systole and reverse rotation in diastole, which requires the IntraVAD to periodically reverse its rotational direction in synchrony with the cardiac cycle. This periodic reversal leads to changes in pressure force over the impeller, which makes the entire system less stable...
September 20, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28929382/serial-assessment-of-left-ventricular-morphology-and-function-in-a-rodent-model-of-ischemic-cardiomyopathy
#16
Vesselina Ferferieva, Nicholas D'Elia, Brecht Heyde, Petr Otahal, Frank Rademakers, Jan D'hooge
Left ventricular remodelling (LVr) occurs post myocardial infarction (MI), predisposing people to heart failure (HF). LV mechanics and morphology are important in this process. We hence sort to characterize LV mechanics and geometry in a post-MI rodent model. Thirty-two male Sprague-Dawley rats (150-200 g) sustained MI (n = 24) or sham (Sham; n = 8) surgery. In another six sham rats invasive blood pressure measurements were performed. Ultrasound imaging was done at baseline, and 1, 3, 7, 14, 30 and 60 days following surgery, and LV mechanics and morphology assessed...
September 19, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28928007/removal-of-uremic-retention-products-by-hemodialysis-is-coupled-with-indiscriminate-loss-of-vital-metabolites
#17
Zhi-Hao Zhang, Jia-Rong Mao, Hua Chen, Wei Su, Yuan Zhang, Li Zhang, Dan-Qian Chen, Ying-Yong Zhao, Nosratola D Vaziri
BACKGROUND: Although dialysis ameliorates uremia and fluid and electrolytes disorders, annual mortality rate remains high in dialysis population reflecting its shortcoming in replacing renal function. Unlike the normal kidney, dialysis causes dramatic shifts in volume and composition of body fluids and indiscriminate removal of vital solutes. Present study was undertaken to determine the impact of hemodialysis on plasma metabolites in end-stage renal disease (ESRD) patients. METHODS: 80 hemodialysis patients and 80 age/gender-matched healthy controls were enrolled in the study...
September 18, 2017: Clinical Biochemistry
https://www.readbyqxmd.com/read/28927298/prognostic-value-of-perfusion-ct-in-hepatocellular-carcinoma-treatment-with-sorafenib-comparison-with-mrecist-in-longitudinal-follow-up
#18
Sascha Kaufmann, Wolfgang M Thaiss, Maximilian Schulze, Michael Bitzer, Ulrich Lauer, Konstantin Nikolaou, Marius Horger
Background Targeted therapies are of increasing clinical importance and classic radiologic therapy response-criteria often fail to detect early therapeutic response or failure. For hepatocellular carcinoma (HCC), this is of major importance as therapeutic options are limited. Purpose To investigate the impact of sorafenib-treatment on intralesional perfusion using perfusion computed tomography (PCT) in HCC and to correlate the observed changes with mRECIST and the course of serum alpha-fetoprotein (AFP) for identification of their prognostic value...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28924565/nirs-based-cerebrovascular-regulation-assessment-exercise-and-cerebrovascular-reactivity
#19
Stephanie Miller, Kunal Mitra
Alterations to cerebral blood flow (CBF) have been implicated in diverse neurological conditions. Near-infrared spectroscopy (NIRS)-measured regional cerebral tissue oxygen saturation ([Formula: see text]) provides an estimate of oxygenation of interrogated cerebral volume useful in identifying variations in oxygen supply to cerebral tissue and in monitoring cerebrovascular function. [Formula: see text]-inhalation-based hypercapnic breathing challenges were used to simulate CBF dysregulation, utilizing NIRS to monitor the CBF autoregulatory response...
October 2017: Neurophotonics
https://www.readbyqxmd.com/read/28923555/effects-of-chronic-hepatitis-c-infection-on-arterial-stiffness
#20
Chang-Hua Chou, Chin-Shan Ho, Wei-Chuan Tsai, Ming-Cheng Wang, Yau-Sheng Tsai, Ju-Yi Chen
Nonalcoholic fatty liver disease (NAFLD) is associated with increased arterial stiffness. Although chronic hepatitis C virus (HCV) infection was shown to be associated with metabolic disorder and chronic inflammation, the effects of chronic HCV infection on arterial stiffness remain unclear. This study recruited 221 patients including 32 normal controls, 72 NAFLD patients, and 117 subjects with HCV infection. Arterial stiffness was assessed by peripheral arterial stiffness index, Compliance Index (CI), and central arterial stiffness index, Stiffness Index derived from digital volume pulse by photoplethysmography...
August 26, 2017: Journal of the American Society of Hypertension: JASH
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