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Blood flow restriction

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https://www.readbyqxmd.com/read/29146521/hla-dq-gluten-tetramer-blood-test-accurately-identifies-patients-with-and-without-celiac-disease-in-absence-of-gluten-consumption
#1
Vikas K Sarna, Knut E A Lundin, Lars Mørkrid, Shuo-Wang Qiao, Ludvig M Sollid, Asbjørn Christophersen
BACKGROUND & AIMS: Celiac disease is characterized by HLA-DQ2/8-restricted responses of CD4+ T cells to cereal gluten proteins. A diagnosis of celiac disease based on serologic and histologic evidence and duodenal histology requires patients to be on gluten-containing diets. The growing number of individuals adhering to a gluten-free diet (GFD) without exclusion of celiac disease complicates its detection. HLA-DQ-gluten tetramers can be used to detect gluten-specific T cells in blood of patients with celiac disease, even if they are on a GFD...
November 13, 2017: Gastroenterology
https://www.readbyqxmd.com/read/29140137/v%C3%AC-o2-and-muscle-deoxygenation-kinetics-during-skating-comparison-between-slide-board-and-treadmill-skating
#2
Tatiane Piucco, Rogério Soares, Fernando Diefenthaeler, Guillaume Millet, Juan Murias
PURPOSE: this study aimed to compare the oxygen uptake (V̇O2) kinetics during skating on a treadmill and skating on a slide board and discuss potential mechanisms that might control the V̇O2 kinetics responses during skating. METHODS: breath-by-breath pulmonary V̇O2 and near-infrared spectroscopy-derived muscle deoxygenation ([HHbMb]) were monitored continuously in 12 well-trained young long track speed skaters. On-transient V̇O2 and [HHbMb] responses to skating on a treadmill and skating on a slide board at 80% of the estimated gas exchange threshold were fitted as mono-exponential function...
November 15, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29133362/three-month-endothelial-human-endothelin-1-overexpression-causes-blood-pressure-elevation-and-vascular-and-kidney-injury
#3
Suellen C Coelho, Olga Berillo, Antoine Caillon, Sofiane Ouerd, Júlio C Fraulob-Aquino, Tlili Barhoumi, Stefan Offermanns, Pierre Paradis, Ernesto L Schiffrin
Endothelium-derived endothelin (ET)-1 has been implicated in the development of hypertension and end-organ damage, but its exact role remains unclear. We have shown that tamoxifen-inducible endothelium-restricted human ET-1 overexpressing (ieET-1) mice exhibited blood pressure rise after a 3-week induction in an ET type A (ETA) receptor-dependent manner, in absence of vascular and renal injury. It is unknown whether long-term ET-1 overexpression results in sustained blood pressure elevation and vascular and renal injury...
November 13, 2017: Hypertension
https://www.readbyqxmd.com/read/29132725/computational-study-of-the-role-of-fluid-content-and-flow-on-the-lumbar-disc-response-in-cyclic-compression-replication-of-in-vitro-and-in-vivo-conditions
#4
Petra Velísková, Maxim Bashkuev, Aboulfazl Shirazi-Adl, Hendrik Schmidt
The intervertebral disc viscoelastic response is governed primarily by its fluid content and flow. Invivo measurements demonstrate that the disc volume, fluid content, height and nucleus pressure completely recover during resting even after diurnal loading with twice longer duration (16 vs. 8 h). In view of much longer periods required for the recovery of disc height and pressure in vitro, concerns have been raised on the fluid inflow through the endplates that might be hampered by clogged blood vessels post mortem...
November 3, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29121970/endothelial-%C3%AE-6%C3%AE-4-integrin-protects-during-experimental-autoimmune-encephalomyelitis-induced-neuroinflammation-by-maintaining-vascular-integrity-and-tight-junction-protein-expression
#5
Jennifer V Welser, Sebok K Halder, Ravi Kant, Amin Boroujerdi, Richard Milner
BACKGROUND: Extracellular matrix (ECM) proteins play critical functions regulating vascular formation and function. Laminin is a major component of the vascular basal lamina, and transgenic mice deficient in astrocyte or pericyte laminin show defective blood-brain barrier (BBB) integrity, indicating an important instructive role for laminin in cerebral blood vessels. As previous work shows that in the normal brain, vascular expression of the laminin receptor α6β4 integrin is predominantly restricted to arterioles, but induced on all vessels during neuroinflammation, it is important to define the role of this integrin in the maintenance of BBB integrity...
November 9, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/29121743/profiling-of-cardiovascular-and-cerebrovascular-disease-associated-microrna-expression-in-umbilical-cord-blood-in-gestational-hypertension-preeclampsia-and-fetal-growth-restriction
#6
Ilona Hromadnikova, Katerina Kotlabova, Katarina Ivankova, Yulia Vedmetskaya, Ladislav Krofta
BACKGROUND AND METHODS: Gene expression of 29 cardiovascular and cerebrovascular disease associated microRNAs was assessed in whole umbilical cord blood, compared between groups [47 gestational hypertension (GH), 56 preeclampsia (PE), 37 fetal growth restriction (FGR) and 44 normal pregnancies] and correlated with the severity of the disease with respect to clinical signs (mild PE vs. severe PE), delivery date (before and after 34weeks of gestation), and Doppler ultrasound parameters [pulsatility index (PI) in the umbilical artery, PI in the middle cerebral artery and the cerebroplacental ratio]...
December 15, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/29121681/concurrent-training-with-blood-flow-restriction-does-not-decrease-inflammatory-markers
#7
Thiago Mattos Frota de Souza, Cleiton Augusto Libardi, Cláudia Regina Cavaglieri, Arthur Fernandes Gáspari, Diego Trevisan Brunelli, Giovana Vergínia de Souza, Carlos Ugrinowitsch, Li Min Li, Mara Patricia Traina Chacon-Mikahil
The aging process is associated with several changes in the elderly such as the decrease in cardiorespiratory fitness, strength and muscle mass, in addition to chronic low-grade inflammation. Concurrent training with blood flow restriction can be an interesting alternative to improve functional capacity with low mechanical stress in the elderly. The purpose of this study was to compare the inflammatory effects in older individuals submitted to two different protocols of concurrent training. Twenty-two healthy older adults (63...
November 9, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29112627/impact-of-blood-flow-restriction-exercise-on-muscle-fatigue-development-and-recovery
#8
Florian Husmann, Thomas Mittlmeier, Sven Bruhn, Volker Zschorlich, Martin Behrens
PURPOSE: The present study was designed to provide mechanistic insight into the time-course and etiology of muscle fatigue development and recovery during and after low-intensity exercise when it is combined with blood flow restriction (BFR). METHODS: Seventeen resistance-trained males completed four sets of low-intensity isotonic resistance exercise under two experimental conditions: knee extension exercise combined with (i) BFR and (ii) without BFR (CON). Neuromuscular tests were performed before, during (immediately after each set of knee extension exercise) and 1, 2, 4, and 8 min after each experimental condition...
November 6, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29109771/selective-targeting-of-a-novel-vasodilator-to-the-uterine-vasculature-to-treat-impaired-uteroplacental-perfusion-in-pregnancy
#9
Natalie Cureton, Iana Korotkova, Bernadette Baker, Susan Greenwood, Mark Wareing, Venkata R Kotamraju, Tambet Teesalu, Francesco Cellesi, Nicola Tirelli, Erkki Ruoslahti, John D Aplin, Lynda K Harris
Fetal growth restriction (FGR) in pregnancy is commonly caused by impaired uteroplacental blood flow. Vasodilators enhance uteroplacental perfusion and fetal growth in humans and animal models; however, detrimental maternal and fetal side effects have been reported. We hypothesised that targeted uteroplacental delivery of a vasodilator would enhance drug efficacy and reduce the risks associated with drug administration in pregnancy. Phage screening identified novel peptides that selectively accumulated in the uteroplacental vasculature of pregnant mice...
2017: Theranostics
https://www.readbyqxmd.com/read/29104345/risk-factors-for-the-development-of-refeeding-syndrome-like-hypophosphatemia-in-very-low-birth-weight-infants
#10
Aiko Igarashi, Takashi Okuno, Genrei Ohta, Shuko Tokuriki, Yusei Ohshima
Background: Refeeding syndrome is characterized by metabolic disturbance including hypophosphatemia and hypokalemia upon reinstitution of nutrition in severely malnourished patients. Objective: The present study sought to identify the risk factors for the development of refeeding syndrome-like metabolic disturbance in very low birth weight infants. Methods: The correlations of severe hypophosphatemia with the serum levels of potassium and ionized calcium, daily calorie and phosphate intake, and umbilical cord blood flow on ultrasonography were analyzed in 49 very low birth weight infants...
2017: Disease Markers
https://www.readbyqxmd.com/read/29098705/intrauterine-growth-restriction-results-in-persistent-vascular-mismatch-in-adulthood
#11
Anderson H Kuo, Cun Li, Hillary F Huber, Geoffrey D Clarke, Peter W Nathanielsz
Maternal nutrient reduction induces intrauterine growth restriction (IUGR), increasing risks of chronic diseases later in life, including cardiovascular dysfunction. Using ultrasound, we determined regional blood flow, blood vessels sizes, and distensibility in IUGR baboons (8M/8F, 8.8 years, similar to 35 human years) and controls (12M/12F, 9.5 years). The measured blood vessels were larger in size in the males compared to females before but not after normalization to body surface area. Smaller IUGR normalized blood vessel sizes were observed in the femoral and external iliac arteries but not the brachial or common carotid arteries and not correlated significantly with birth weight...
November 3, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/29097590/molecular-and-cellular-underpinnings-of-normal-and-abnormal-human-placental-blood-flow
#12
Yingchun Li, Ramón A Lorca, Emily J Su
Abnormal placental function is well-established as a major cause for poor pregnancy outcome. Placental blood flow within the maternal uteroplacental compartment, the fetoplacental circulation, or both, is a vital factor in mediating placental function. Impairment in flow in either or both vasculatures is a significant risk factor for adverse pregnancy outcome, potentially impacting maternal well-being, affecting immediate neonatal health, and even influencing the long-term health of the infant. Much remains unknown regarding the mechanistic underpinnings of proper placental blood flow...
November 2, 2017: Journal of Molecular Endocrinology
https://www.readbyqxmd.com/read/29093274/notch3-regulates-stem-to-mural-cell-differentiation-in-infantile-hemangioma
#13
Andrew K Edwards, Kyle Glithero, Peter Grzesik, Alison A Kitajewski, Naikhoba Co Munabi, Krista Hardy, Qian Kun Tan, Michael Schonning, Thaned Kangsamaksin, Jan K Kitajewski, Carrie J Shawber, June K Wu
Infantile hemangioma (IH) is a vascular tumor that begins with rapid vascular proliferation shortly after birth, followed by vascular involution in early childhood. We have found that NOTCH3, a critical regulator of mural cell differentiation and maturation, is expressed in hemangioma stem cells (HemSCs), suggesting that NOTCH3 may function in HemSC-to-mural cell differentiation and pathological vessel stabilization. Here, we demonstrate that NOTCH3 is expressed in NG2+PDGFRβ+ perivascular HemSCs and CD31+GLUT1+ hemangioma endothelial cells (HemECs) in proliferating IHs and becomes mostly restricted to the αSMA+NG2loPDGFRβlo mural cells in involuting IHs...
November 2, 2017: JCI Insight
https://www.readbyqxmd.com/read/29084094/the-effects-of-practical-blood-flow-restriction-training-on-adolescent-lower-body-strength
#14
Paul E Luebbers, Emily V Witte, Johnathan Q Oshel
The purpose of this study was to examine the effects of a practical blood flow restriction (BFR) training program on lower-body strength of high school weightlifters. Twenty-five students were divided into three groups. For six weeks, each group completed the same resistance training program with the exception of the parallel back squat exercise (2 days/week), which was different for each group. One group (HI) completed a traditional high load (≥65% 1RM) back squat protocol with three sets of low repetitions (≤10)...
October 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29084035/risks-of-exertional-rhabdomyolysis-with-blood-flow-restricted-training-beyond-the-case-report
#15
Kyle M A Thompson, Joshua T Slysz, Jamie F Burr
No abstract text is available yet for this article.
October 26, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29076974/on-the-role-of-illness-duration-and-nutrient-restriction-in-cholestatic-alterations-that-occur-during-critical-illness
#16
Marc Jenniskens, Fabian Güiza, Marlies Oorts, Sarah Vander Perre, Sarah Derde, Thomas Dufour, Steven Thiessen, Pieter Annaert, Greet Van den Berghe, Lies Langouche
BACKGROUND AND AIMS: Elevated markers of cholestasis are common in response to critical illness, and associated with adverse outcome. The role of illness duration and of nutrient restriction on underlying molecular pathways of such cholestatic responses have not been thoroughly investigated. METHODS: In a mouse model of surgery- and sepsis-induced critical illness, molecular pathways of cholestasis were investigated up to 7 days. To assess which changes are explained by illness-induced lack of feeding, nutrient-restricted healthy mice were studied and compared with ad libitum fed healthy mice...
October 25, 2017: Shock
https://www.readbyqxmd.com/read/29076654/the-respiratory-system-in-pediatric-chronic-heart-disease
#17
REVIEW
Sotiria C Apostolopoulou
Cardiovascular disease in the pediatric population closely affects the respiratory system inducing water retention in the lungs and pulmonary edema, airway compression by cardiovascular structures, restrictive pulmonary physiology as a result of hemodynamic changes and surgical repair, susceptibility to respiratory infections, development of pulmonary hypertension, thrombosis, or hemorrhage. Chronic heart failure and congenital heart disease are characterized by various respiratory manifestations and symptoms mimicking lung disease, which are frequently difficult to diagnose and treat...
December 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/29058111/the-effects-of-muscle-blood-flow-restriction-during-running-training-on-measures-of-aerobic-capacity-and-run-time-to-exhaustion
#18
Carl D Paton, Shalako M Addis, Lee-Anne Taylor
PURPOSE: Training with blood flow restriction (BFR) is known to enhance muscle mass and strength during resistance training activities. However, little is known about the BFR effects during aerobic training. This investigation examines the effects of running training performed with or without BFR on physiology and performance. METHOD: Sixteen subjects (age 24.9 ± 6.9 years, height 172.9 ± 7.8 cm, weight 75.1 ± 13.8 kg) were assigned to a BFR or control (CON) group for eight sessions of training...
October 20, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29053546/histopathology-of-calciphylaxis-cohort-study-with-clinical-correlations
#19
Tiffany Y Chen, Julia S Lehman, Lawrence E Gibson, Christine M Lohse, Rokea A El-Azhary
Calciphylaxis is a rare, painful, and life-threatening condition with a high mortality rate. Although the etiology of calciphylaxis is not well understood, it has been proposed that calcium deposition within and around subcutaneous vessels restricts blood flow chronically, thereby predisposing the patient to acute pannicular and dermal thrombosis. Given increasing recognition of the role of hypercoagulability in calciphylaxis, this retrospective cohort study sought to evaluate the presence of thromboses and dermal angioplasia in calciphylaxis...
November 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/29049889/early-metabolic-response-after-resistance-exercise-with-blood-flow-restriction-in-well-trained-men-a-metabolomics-approach
#20
Denis F Valério, Ricardo Berton, Miguel S Conceição, Rafael R Canevarolo, Mara Patrícia T Chacon-Mikahil, Cláudia R Cavaglieri, Gabriela V Meirelles, Ana C Zeri, Cleiton A Libardi
The present study aimed to compare the early metabolic response between high-load resistance exercise (HL-RE) and low-load resistance exercise with blood flow restriction (LL-BFR). Nine young well-trained men participated in a randomized crossover design in which each subject completed LL-BFR, HL-RE or condition control (no exercise) with a one-week interval between them. Blood samples were taken immediately before and five minutes after the exercise sessions. Nuclear magnetic resonance (NMR) spectroscopy identified and quantified 48 metabolites, six of which presented significant changes among the exercise protocols...
October 19, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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