keyword
MENU ▼
Read by QxMD icon Read
search

Blood volume changes

keyword
https://www.readbyqxmd.com/read/28648039/-effects-of-combined-application-of-culture-supernatant-of-human-umbilical-cord-mesenchymal-stem-cells-and-ciprofloxacin-on-staphylococcus-aureus-in-vitro
#1
B Zhou, H L Tu, T Ba, L F Wang, S J Wang, S Y Nie
Objective: To explore the effects of combined application of culture supernatant of human umbilical cord mesenchymal stem cells (hUCMSCs) and ciprofloxacin on Staphylococcus aureus (SA) in vitro. Methods: hUCMSCs were isolated from umbilical cord tissue of full-term healthy fetus after cesarean section and cultured. Cells in the third passage were used in the experiments after identification. SA strains isolated from wounds of burn patients in our burn wards were used in the experiments. Cells were divided into 0, 10, 100, and 1 000 ng/mL lipopolysaccharide (LPS) groups according to the random number table (the same dividing method below)...
June 20, 2017: Zhonghua Shao Shang za Zhi, Zhonghua Shaoshang Zazhi, Chinese Journal of Burns
https://www.readbyqxmd.com/read/28646626/sexual-dimorphism-in-umbilical-vein-blood-flow-during-the-second-half-of-pregnancy-a-longitudinal-study
#2
Christian Widnes, Kari Flo, Tom Wilsgaard, Anthony O Odibo, Ganesh Acharya
OBJECTIVES: To investigate gestational age-specific serial changes in umbilical vein (UV) volume blood flow during the second half of normal pregnancy and establish sex-specific reference ranges. METHODS: This work was a prospective longitudinal study of singleton low-risk pregnancies. The UV diameter and maximum blood flow velocity were serially measured by sonography at the intra-abdominal portion of the UV over 19 to 41 weeks. Umbilical vein volume blood flow was calculated and normalized for estimated fetal weight...
June 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28645847/cardiovascular-morphometry-with-high-resolution-3d-magnetic-resonance-first-application-to-left-ventricle-diastolic-dysfunction
#3
Diego Gallo, Orestis Vardoulis, Pierre Monney, Davide Piccini, Panagiotis Antiochos, Juerg Schwitter, Nikolaos Stergiopulos, Umberto Morbiducci
In this study, an image-based morphometry toolset quantifying geometric descriptors of the left ventricle, aorta and their coupling is applied to investigate whether morphological information can differentiate between subjects affected by diastolic dysfunction (patient group) and their age-matched controls (control group). The ventriculo-aortic region of 20 total participants (10 per group) were segmented from high-resolution 3D magnetic resonance images, from the left ventricle to the descending aorta. Each geometry was divided into segments in correspondence of anatomical landmarks...
June 21, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28644546/-18-f-fluoromisonidazole-uptake-in-advanced-stage-non-small-cell-lung-cancer-a-voxel-by-voxel-pet-kinetics-study
#4
Daniel R McGowan, Ruth E Macpherson, Sara L Hackett, Dan Liu, Fergus V Gleeson, W Gillies McKenna, Geoff S Higgins, John D Fenwick
PURPOSE: To determine the relative abilities of compartment models to describe time-courses of 18F-fluoromisonidazole (FMISO) uptake in tumor voxels of patients with non-small cell lung cancer (NSCLC) imaged using dynamic positron emission tomography. Also to use fits of the best-performing model to investigate changes in fitted rate-constants with distance from the tumor edge. METHODS: Reversible and irreversible two- and three-tissue compartment models were fitted to 24,662 individual voxel time activity curves (TACs) obtained from tumors in 9 patients, each imaged twice...
June 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28643891/direct-comparison-of-high-temporal-resolution-cine-mri-with-doppler-ultrasound-for-assessment-of-diastolic-dysfunction-in-mice
#5
Thomas A Roberts, Anthony N Price, Laurence H Jackson, Valerie Taylor, Anna L David, Mark F Lythgoe, Daniel J Stuckey
Diastolic dysfunction is a sensitive early indicator of heart failure and can provide additional data to conventional measures of systolic function. Transmitral Doppler ultrasound, which measures the one-dimensional flow of blood through the mitral valve, is currently the preferred method for the measurement of diastolic function, but the measurement of the left ventricular volume changes using high-temporal-resolution cinematic magnetic resonance imaging (CINE MRI) is an alternative approach which is emerging as a potentially more robust and user-independent technique...
June 23, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28643554/combined-effects-of-physical-inactivity-and-acute-hyperglycemia-on-arterial-distensibility
#6
David Montero, Sune Dandanell, Laura Oberholzer, Stefanie Keiser, Andreas Breenfeldt-Andersen, Thomas Haider, Mario Merlini, Anne-Kristine Meinild-Lundby, Carsten Lundby
Arterial distensibility, an independent predictor of cardiovascular events, is transiently increased with acute hyperglycemia (AHG) in healthy individuals. Whether this response interacts with physical inactivity remains unknown. We examined the effects of short-term bed rest (BR) on the response of carotid artery distensibility (CD) to AHG, and the influence of underlying changes in insulin resistance and blood volume. CD was assessed with ultrasonography before as well as 30 and 120 minutes following ingestion of 75 g of glucose prior to and after 3 days of BR in 15 healthy male volunteers...
June 1, 2017: Vascular Medicine
https://www.readbyqxmd.com/read/28641574/intermittent-low-platelet-counts-hampering-diagnosis-of-x-linked-thrombocytopenia-in-children-report-of-two-unrelated-cases-and-a-novel-mutation-in-the-gene-coding-for-the-wiskott-aldrich-syndrome-protein
#7
Samuel Souza Medina, Lúcia Helena Siqueira, Marina Pereira Colella, Gabriela Goes Yamaguti-Hayakawa, Bruno Kosa Lino Duarte, Maria Marluce Dos Santos Vilela, Margareth Castro Ozelo
BACKGROUND: Thrombocytopenia can occur in different circumstances during childhood and although immune thrombocytopenia is its most frequent cause, it is important to consider other conditions, especially when there is a persistent or recurrent low platelet count. We report two cases of intermittent thrombocytopenia, previously misdiagnosed as immune thrombocytopenia. CASES PRESENTATION: Both cases described were boys who presented with an intermittent pattern of thrombocytopenia, with a persistently low mean platelet volume...
June 22, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28641093/hematological-parameters-and-red-blood-cell-morphological-abnormality-of-glucose-6-phosphate-dehydrogenase-deficiency-co-inherited-with-thalassemia
#8
Jutharat Pengon, Saovaros Svasti, Sumalee Kamchonwongpaisan, Phantip Vattanaviboon
OBJECTIVE/BACKGROUND: Glucose-6-phosphate dehydrogenase (G-6-PD) deficiency and thalassemia are genetically independent hemolytic disorders. Co-inheritance of both disorders may affect red blood cell pathology to a greater extent than normally seen in either disorder alone. This study determines the prevalence and evaluates hematological changes of G-6-PD deficiency and thalassemia co-inheritance. METHODS: G-6-PD deficiency was screened from 200 male thalassemia blood samples using a fluorescent spot test...
June 15, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28640773/salivary-mitochondrial-dna-copy-number-is-associated-with-exercise-ventilatory-efficiency
#9
Yang Chen, Helene Z Hill, Gudrun Lange, Michael J Falvo
Chen, Y, Hill, HZ, Lange, G, and Falvo, MJ. Salivary mitochondrial DNA copy number is associated with exercise ventilatory efficiency. J Strength Cond Res 31(7): 2000-2004, 2017-Mitochondrial DNA copy number (mtDNAcn) is an index of mitochondrial content and is responsive to changes in exercise training volume. Therefore, assessment of mtDNAcn may help to optimize exercise prescription and aid in athlete monitoring. Although previous work has assessed mtDNAcn derived from skeletal muscle and blood using invasive approaches, no study has examined salivary mtDNAcn and its relationship with sport performance...
July 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28639438/body-composition-analysis-to-study-long-term-training-effects-in-elite-male-water-polo-athletes
#10
Giovanni Melchiorri, Valerio Viero, Roberto Sorge, Tamara Triossi, Alessandro Campagna, Stella L Volpe, Dalgisio Lecis, Virginia Tancredi, Angela Andreoli
BACKGROUND: Elite water polo athletes undergo heavy training programs throughout the year, but especially to prepare major competitions, such as the Olympics. Optimal athletic performance is a result of many factors, including proper management of the intensity and volume of training, nutrition and recovery between training sessions. When training is excessive in relation to recovery may occur non functional overreaching (NFO). NFO can degenerate into overtraining syndrome (OTS) resulting in a decrease in athletic performance, with likely changes in body weight and body composition...
June 21, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28639005/central-hepatectomy-still-plays-an-important-role-in-treatment-of-early-stage-centrally-located-hepatocellular-carcinoma
#11
Chun-Han Chen, Tzu-Hao Huang, Cheng-Chih Chang, Wei-Feng Li, Ting-Lung Lin, Chih-Chi Wang
BACKGROUND: Surgical management of centrally located hepatocellular carcinoma (CL-HCC) poses a great challenge. Major hepatectomy (MH) might compromise future remnant liver volume (FRLV), while the long-term benefits of central hepatectomy (CH) had not been well demonstrated. METHODS: Consecutive patients with early-stage CL-HCC who underwent liver resection were enrolled. Fifteen patients underwent CH, while thirty-three were subjected to MH. All relevant clinicopathological variables were analyzed...
June 21, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28638702/cerebral-blood-flow-evaluation-of-intensive-rosuvastatin-therapy-in-stroke-transient-ischemic-attack-patients-with-intracranial-arterial-atherosclerotic-stenosis-study-rationale%C3%A2-and-design
#12
Xuting Zhang, Ying Zhou, Sheng Zhang, Wenhong Ding, Min Lou
INTRODUCTION: The risk of recurrent stroke is high in patients with intracranial atherosclerotic stenosis (ICAS). Statin use has been demonstrated to decrease the incidence of stroke by reducing atherosclerotic plaque burden. However, its effect on the hemodynamic situation and cerebral perfusion status has not yet been validated. With the use of computed tomography perfusion (CTP), we aim to evaluate the impact of Rosuvastatin on cerebral hemodynamic changes, as well as the downstream perfusion...
June 2017: Brain and Behavior
https://www.readbyqxmd.com/read/28638676/utilization-of-longitudinal-ultrasound-to-quantify-joint-soft-tissue-changes-in-a-mouse-model-of-posttraumatic-osteoarthritis
#13
Hao Xu, Echoe M Bouta, Ronald W Wood, Edward M Schwarz, Yongjun Wang, Lianping Xing
To assess the utility of longitudinal ultrasound (US) to quantify volumetric changes in joint soft tissues during the progression of posttraumatic osteoarthritis (PTOA) in mice, and validate the US results with histological findings. A longitudinal cohort of 3-month-old wild-type C57BL/6 male mice received the Hulth-Telhag surgical procedure on right knee to induce PTOA, and sham surgery on their left knee as control. US scans were performed on both knees before, 2, 4, 6, and 8 weeks post-surgery. Joint space volume and Power-Doppler (PD) volume were obtained from US images via Amira software...
2017: Bone Research
https://www.readbyqxmd.com/read/28637413/early-phase-18f-av-45-pet-imaging-can-detect-crossed-cerebellar-diaschisis-following-carotid-artery-stenosis-and-cerebral-hypoperfusion
#14
Tsong-Hai Lee, Kuo-Lun Huang, Ting-Yu Chang, Meng-Yang Ho, Shiaw-Pyng Wey, Chia-Ju Hsieh, Tzu-Chen Yen, Kun-Ju Lin, Ing-Tsung Hsiao
Background Carotid artery stenosis (CAS) may induce cerebral hypoperfusion. Early-phase 18F-Florbetapir (AV-45/Amyvid, 18F-AV-45) positron emission tomography (PET) imaging can provide perfusion-like property (pAV-45) for the estimation of cerebral blood flow (CBF). Supra-tentorial lesions may cause decreased blood flow and metabolism in the contralateral cerebellum known as crossed cerebellar diaschisis (CCD). Objective To study the occurrence of CCD after CAS using pAV-45 PET. Methods Eleven healthy controls and 21 patients with unilateral CAS were studied...
June 21, 2017: Current Neurovascular Research
https://www.readbyqxmd.com/read/28636165/a-feasibility-and-safety-study-of-intracoronary-hemodilution-during-primary-coronary-angioplasty-in-order-to-reduce-reperfusion-injury-in-myocardial-infarction
#15
Michael McGarvey, Omar Ali, M Bilal Iqbal, Charles Ilsley, Joyce Wong, Carlo Di Mario, Simon Redwood, Tiffany Patterson, Dudley J Pennell, Paula Rogers, Miles Dalby
OBJECTIVES: We designed a pilot study to evaluate safety and feasibility of an inexpensive and simple approach to intracoronary hemodilution during primary angioplasty (PPCI) to reduce reperfusion injury. INTRODUCTION: Early revascularization in acute myocardial infarction decreases infarct size and improves outcomes. However, abrupt restoration of coronary flow results in myocardial reperfusion injury and increased final infarct size. Dilution of coronary blood during revascularization may help reduce this damage...
June 21, 2017: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/28635513/evaluation-of-platelet-indices-and-red-cell-distribution-width-as-new-biomarkers-for-the-diagnosis-of-acute-appendicitis
#16
Noha Boshnak, Mohamed Boshnaq, Hatem Elgohary
BACKGROUND: Debate around the value of laboratory tests in establishing the diagnosis of acute appendicitis (AA) still continues. This prospective study aimed to investigate the changes in mean platelet volume (MPV), platelet distribution width (PDW), and red cell distribution width (RDW) with the diagnosis of acute appendicitis. METHOD: 200 patients who underwent emergency appendectomy were included. According to postoperative histology, patients were divided into three groups: acute non-complicated, acute complicated appendicitis (positive appendicectomy groups), and negative appendectomy group...
February 16, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28634048/activation-volume-vs-bold-signal-change-as-measures-of-fmri-activation-its-impact-on-gaba-fmri-activation-correlation
#17
Pallab K Bhattacharyya, Micheal D Phillips, Lael A Stone, Mark J Lowe
PURPOSE: To explore the relative robustness of functional MRI (fMRI) activation volume and blood oxygen level-dependent (BOLD) signal change as fMRI metric, and to study the effect of relative robustness on the correlation between fMRI activation and cortical gamma amino butyric acid (GABA) in healthy controls and patients with multiple sclerosis (MS). METHODS: fMRI data were acquired from healthy controls and patients with MS, with the subjects peforming self paced bilateral finger tapping in block design...
June 17, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28631203/assessment-of-mri-contrast-agent-concentration-by-quantitative-susceptibility-mapping-qsm-application-to-estimation-of-cerebral-blood-volume-during-steady-state
#18
Emelie Lind, Linda Knutsson, Robin Kämpe, Freddy Ståhlberg, Ronnie Wirestam
OBJECTIVE: One major issue in dynamic susceptibility contrast MRI (DSC-MRI) is to accurately determine contrast agent (CA) concentration, since T2* relaxivity in vivo is generally unknown and varies between blood and tissue. In this study, quantitative susceptibility mapping (QSM) was used for quantification of CA concentration. MATERIALS AND METHODS: A DSC-MRI protocol, including phase data acquisition, was applied to 20 healthy volunteers in a test-retest study...
June 19, 2017: Magma
https://www.readbyqxmd.com/read/28628969/comparative-induction-of-controlled-hypotension-by-electroacupuncture-at-du20-acupoint-and-remifentanil-in-lumbar-laminectomy
#19
Mehdi Ghaemi, Majid Ansari, Kourosh Amini
Hypotensive anesthesia is utilized to reduce bleeding during orthopedic surgery. One of the various drugs that have been used to reduce blood pressure is remifentanil. This study was an attempt to compare the effect of remifentanil with that of electroacupuncture (EA) at DU20 on reducing blood pressure. In this randomized controlled clinical trial, 54 patients undergoing lumbar laminectomy were allocated to two groups. Hypotensive anesthesia was performed through infusion of remifentanil 100 μg/kg/min for the control group, and EA at DU20 acupoint with a frequency of 2-10 Hz and intensity of 1-5 mA for the intervention group...
June 30, 2017: Chinese Journal of Physiology
https://www.readbyqxmd.com/read/28628341/observational-study-of-neural-respiratory-drive-during-sleep-at-high-altitude
#20
Joerg Steier, Nic Cade, Ben Walker, John Moxham, Caroline Jolley
Steier, Joerg, Nic Cade, Ben Walker, John Moxham, and Caroline Jolley. Observational study of neural respiratory drive during sleep at high altitude. High Alt Med Biol. 16:000-000, 2017. AIMS: Ventilation at altitude changes due to altered levels of pO2, pCO2 and the effect on blood pH. Nocturnal ventilation is particularly exposed to these changes. We hypothesized that an increasing neural respiratory drive (NRD) is associated with the severity of sleep-disordered breathing at altitude...
June 19, 2017: High Altitude Medicine & Biology
keyword
keyword
113973
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"