Blood Flow

Source: news.google.com --- 49 days ago
Boston Globe Shlock and Blood Flow in 'Mother of Tears' Boston Globe - 2 hours ago Evil monkeys play a part in Dario Argento's horrorfest, "Mother of Tears." (FRANCO BELLOMO/MITROPOULOS FILMS) A reader recently wondered why I continue to review horror films if don't like them. 'Bomb It', 'The Mother of Tears,' 'The Poet' and double feature ... Los Angeles Times Alternate Titles: The Third Mother, The Mother of Tears New York Times Washington Post  - Philadelphia Daily News  - The Star-Ledger - NJ.com  - Filmjerk.com all 15 news articles ...

Source: abclocal.go.com --- 22 days ago
New research shows that green tea may prevent heart disease. ...

Source: www.nytimes.com --- 3 days ago
Over time, cycling in a peloton becomes instinctual, and our bicycles become extensions of our bodies. When that Flow is broken, reaction time is limited and we often crash. ...

Source: www.ncbi.nlm.nih.gov --- 23 days ago
Related Articles Juvenile methylphenidate modulates reward-related behaviors and cerebral Blood Flow by decreasing cortical D3 receptors. Eur J Neurosci. 2008 Jun;27(11):2962-72 Authors: Andersen SL, Napierata L, Brenhouse HC, Sonntag KC Attention deficit hyperactivity disorder is associated with reduced cortical Blood Flow that is reversible with exposure to the psychostimulant methylphenidate (MPH). D3 dopamine receptors modulate stimulant-induced changes in Blood Flow and are associated with reward processing during young adulthood, but their role in the enduring effects of MPH during development is unknown. Rats were given vehicle (VEH) or MPH (2 mg/kg between postnatal days 20-35) and assessed in young adulthood for regional cerebral Blood volume (rCBV) after MPH challenge and mRNA expression levels of dopamine receptors. To probe D3 receptor involvement, juvenile subjects were exposed to VEH, MPH, the D3-preferring agonist +/-7-OHDPAT (0.3 mg/kg), the D3 antagonist nafadotride (Naf; 0.05, 0.5 or 5.0 mg/kg) or a Naf (0.05 mg/kg)/MPH combination, and assessed biochemically and behaviorally. Juvenile MPH exposure increased MPH-induced rCBV in the cingulate and medial prefrontal cortex and thalamus in adulthood. Behaviorally, juvenile MPH- or +/-7-OHDPAT-exposed subjects demonstrated an aversion to cocaine-associated environments, which was prevented by juvenile co-treatment with MPH and Naf, or with adult cortical microinjections of ...

Source: www.ncbi.nlm.nih.gov --- 16 days ago
Related Articles Acupuncture Affects Regional Blood Flow in Various Organs. Evid Based Complement Alternat Med. 2008 Jun;5(2):145-151 Authors: Uchida S, Hotta H In this review, our recent studies using anesthetized animals concerning the neural mechanisms of vasodilative effect of acupuncture-like stimulation in various organs are briefly summarized. Responses of cortical cerebral Blood Flow and uterine Blood Flow are characterized as non-segmental and segmental reflexes. Among acupuncture-like stimuli delivered to five different segmental areas of the body; afferent inputs to the brain stem (face) and to the spinal cord at the cervical (forepaw), thoracic (chest or abdomen), lumbar (hindpaw) and sacral (perineum) levels, cortical cerebral Blood Flow was increased by stimuli to face, forepaw and hindpaw. The afferent pathway of the responses is composed of somatic groups III and IV afferent nerves and whose efferent nerve pathway includes intrinsic cholinergic vasodilators originating in the basal forebrain. Uterine Blood Flow was increased by cutaneous stimulation of the hindpaw and perineal area, with perineal predominance. The afferent pathway of the response is composed of somatic group II, III and IV afferent nerves and the efferent nerve pathway includes the pelvic parasympathetic cholinergic vasodilator nerves. Furthermore, we briefly summarize vasodilative regulation of skeletal muscle Blood Flow via a calcitonin gene-related p ...

Source: www.ncbi.nlm.nih.gov --- 16 days ago
Related Articles Acupuncture Treatment for Low Back Pain and Lower Limb Symptoms-The Relation between Acupuncture or Electroacupuncture Stimulation and Sciatic Nerve Blood Flow. Evid Based Complement Alternat Med. 2008 Jun;5(2):133-143 Authors: Inoue M, Kitakoji H, Yano T, Ishizaki N, Itoi M, Katsumi Y To investigate the clinical efficacy of acupuncture treatment for lumbar spinal canal stenosis and herniated lumbar disc and to clarify the mechanisms in an animal experiment that evaluated acupuncture on sciatic nerve Blood Flow. In the clinical trial, patients with lumbar spinal canal stenosis or herniated lumbar disc were divided into three treatment groups; (i) Ex-B2 (at the disordered level), (ii) electrical acupuncture (EA) on the pudendal nerve and (iii) EA at the nerve root. Primary outcome measurements were pain and dysesthesia [evaluated with a visual analogue scale (VAS)] and continuous walking distance. In the animal study, sciatic nerve Blood Flow was measured with laser-Doppler flowmetry at, before and during three kinds of stimulation (manual acupuncture on lumber muscle, electrical stimulation on the pudendal nerve and electrical stimulation on the sciatic nerve) in anesthetized rats. For the clinical trial, approximately half of the patients who received Ex-B2 revealed amelioration of the symptoms. EA on the pudendal nerve was effective for the symptoms which had not improved by Ex-B2. Considerable immediate and sustaine ...

Source: www.ncbi.nlm.nih.gov --- 2 days ago
Related Articles Transcranial doppler in sickle cell anaemia: evaluation of brain Blood Flow parameters in children of Aracaju, Northeast - Brazil. Arq Neuropsiquiatr. 2008 Jun;66(2b):360-364 Authors: Melo HA, Barreto-Filho JA, Prado RC, Cipolotti R BACKGROUND: Environmental factors interfere on sickle cell anaemia (SCA). Transcanial Doppler (TCD) is important to evaluate cerebrovascular disease. OBJECTIVE: To evaluate brain haemodynamic profile of children with SCA in Sergipe. METHODS: Cross sectional study (group1: SCA patients aged 3-18; group2: age and sex matched healthy individuals). Baseline brain Flow was evaluated. RESULTS: Group1=34 patients; group 2=81 controls. SCA patients had mean velocity (MV)=125.69 cm/s+/-23.40; pulsatility index (PI)=0.66+/-0.10; middle cerebral artery ratio (MCAr)=14.53+/-15.23; right anterior cerebral artery/right middle cerebral artery=0.77+/-0.20; left anterior cerebral artery/left middle cerebral artery=0.78+/-0.20. Controls had MV=79.44+/-15.54; PI=0.82+/-0.11; MCAr=13.19+/-13.77; right anterior cerebral artery/right middle cerebral artery=0.80+/-0.16; left anterior cerebral artery/left middle cerebral artery=0.84+/-0.18. MV and PI differences were statistically significant between groups. MV was related to age but not to gender. CONCLUSION: MV evaluation using TCD was similar to international standards and possible to be used in our setting. PMID: 18641872 [PubMed - as supplied by publisher] ...

Source: www.ncbi.nlm.nih.gov --- 3 days ago
Related Articles Evaluation of Doppler ultrasonography for the measurement of Blood Flow in young loggerhead sea turtles (Caretta caretta). Vet J. 2008 Jun;176(3):385-92 Authors: Valente AL, Parga ML, Espada Y, Lavin S, Alegre F, Marco I, Cuenca R The aim of this study was to identify ultrasound accessible Blood vessels in the loggerhead sea turtle (Caretta caretta) and describe their Doppler waveform patterns, peak systolic velocity, mean velocity, systolic/diastolic ratio as well as pulsatility and resistive indices. B-mode, colour and pulsed-wave Doppler examinations were performed on 10 turtles. Flow measurements were recorded for the left and right aorta, epigastric and internal iliac arteries, and right hepatic vein. Additionally, the large Blood vessels of three dead turtles were injected with latex and dissected for anatomical support. A parabolic Flow velocity profile was observed in all arteries. The waveforms of the right and left aortic arteries showed an unusual pattern when compared with mammals. The hepatic vein Flow velocity waveform of the loggerhead sea turtle was found to be similar to that in the dog, although the Flow velocity in the C-wave was higher than that in the A-wave. The low resistance Flow pattern observed suggests that the loggerhead sea turtle's organs require a continuous Blood supply. PMID: 17493852 [PubMed - indexed for MEDLINE] ...

Source: www.ncbi.nlm.nih.gov --- 12 days ago
Related Articles Colour Doppler imaging evaluation of Blood Flow parameters in the ophthalmic artery in acute and chronic phases of optic neuritis in multiple sclerosis. Acta Ophthalmol. 2008 Jun 19; Authors: Hradílek P, Stourac P, Bar M, Zapletalová O, Skoloudík D Purpose: Optic neuritis (ON) is a common manifestation of multiple sclerosis (MS). It is caused by the immune-mediated inflammation of the optic nerve. Some vascular factors that may influence Blood Flow in the ophthalmic artery (OA) have also been suggested as factors in the pathogenesis of ON. The purpose of our study was to evaluate Blood Flow velocities and resistance (RI) and pulsatile (PI) indices in the OA in both orbits in patients in the acute and chronic phases of unilateral ON and to compare these with equivalent findings in healthy control subjects. Methods: Orbital colour Doppler imaging (CDI) was performed in 40 consecutive MS patients during acute unilateral ON prior to corticosteroid treatment. Optic neuritis was diagnosed on the basis of clinical presentation and facultative assessment of visual evoked potentials (VEPs). The peak systolic (PSV) and end-diastolic (EDV) velocities and RI and PI were measured in the OA in both eyes. We compared results from affected and unaffected orbits using the paired t-test. The same measurements were performed in 114 MS patients with a history of acute unilateral ON that occurred > 1 year prior to ultrasound examination. W ...

Source: www.ncbi.nlm.nih.gov --- 30 days ago
Related Articles Regional Pulmonary Blood Flow in Humans and Dogs by 4D Computed Tomography. Acad Radiol. 2008 Jul;15(7):844-52 Authors: Dakin JH, Evans TW, Hansell DM, Hoffman EA RATIONALE AND OBJECTIVES: Pulmonary vascular control mechanisms are complex and likely to differ between species. We wish to quantify regional perfusion and the effects of gravity using computed tomography. MATERIALS AND METHODS: Sequential density measurements following the administration of a bolus of iodinated contrast medium were acquired from four healthy human subjects and four dogs. RESULTS: In humans, perfusion (Q) was linear throughout most of the range of vertical height, with an overall gradient of -2.6% cm(-1). However, when perfusion was normalized to "tissue" density (Blood plus tissue: sQ(t)), maximum perfusion occurred around the mid-range of vertical height, being 9% (range 1-22%) greater than either the dorsal or ventral extreme. Within discrete transverse axial sections, concentric zones of perfusion centered on Blood vessels were demonstrated. The relationship between sQ(t) and vertical height in dogs was distinctly linear, with a gradient of -7.2% cm(-1). In dogs, the median gradient of Q was -13.6% cm(-1) (range -9.7 to -17.1%). CONCLUSIONS: Differences in regional pulmonary perfusion, particularly the vertical gradient observed in humans and dogs, may in part reflect anatomic differences between the symmetric dichotomous branching stru ...

Source: www.moreover.com --- 28 days ago
New research from Harvard University neuroscientists has pinpointed exactly how neural activity boosts Blood Flow to the brain. ...

Source: www.ncbi.nlm.nih.gov --- 48 days ago
Related Articles CFD analysis of pulsatile Blood Flow in an atherosclerotic human artery with eccentric plaques. J Biomech. 2008 Jun 2; Authors: Lorenzini G, Casalena E Atherosclerosis is a slow vascular degeneration. It thickens the internal walls of a Blood vessel locally depositing an atherosclerotic plaque. Such reduced lumen increases the resistance to Blood Flow. Plaques can be punctual (eccentric, here considered) or circumferential (symmetrical). Stenoses do not have a typical shape: we hypothesised here a reference geometry (trapezium) with its possible evolutions (semi-ellipse, triangle). Two criteria (Equivalent Area and Equivalent Dimensions) were then defined to compare the results among the 35 case studies numerically analysed with a Computational Fluid Dynamics code (Comsol Multiphysics 3.3). Blood was considered a Cassonian fluid with modified viscosity equation. The artery was cylindrical, rigid and straight, interested by a pulsatile Blood Flow. Among the variables: shape and dimensions of the stenoses; number of stenoses (single or coupled pathologies); mutual locations (3 possibilities). The main results were that the length of the consequent Flow disturbance is due to the stenotic shape and height; Blood Flow recirculation, downstream of the pathology, is due to the slope of the stenotic walls; and the peak velocities depend on the shape and height of stenosis. The differences from case to case diminish in diastole. ...

Source: www.ncbi.nlm.nih.gov --- 46 days ago
Related Articles Differential effect of recruitment manoeuvres on Pulmonary Blood Flow and Oxygenation during HFOV in preterm lambs. J Appl Physiol. 2008 Jun 5; Authors: Polglase GR, Moss TJ, Nitsos I, Allison BJ, Pillow JJ, Hooper SB The effects of lung volume recruitment manoeuvres on pulmonary Blood Flow (PBF) during high-frequency oscillatory ventilation (HFOV) in preterm neonates are unknown. As increased airway pressure adversely affects PBF, we compared the effects of two HFOV recruitment strategies on PBF and oxygenation index (OI). Preterm lambs (128+/-1d gestation; term ~150d) were anesthetized and ventilated using HFOV (10Hz, 33%tI) with a mean airway pressure (Pao) of 15cmH2O. Lung volume was recruited by either increasing Pao to 25cmH2O for 1 min, repeated 5 times at 5 min intervals (Sigh group; n=5) or stepwise (5cmH2O) changes in Pao at 5 min intervals incrementing up to 30cmH2O then decrementing back to 15 cmH2O (Ramp group; n=6). Controls (n=5) received constant HFOV at 15cmH2O. PBF progressively decreased (by 45+/-4%) and OI increased (by 15+/-6%, indicating reduced oxygenation) in controls during HFOV which was similar to the changes observed in the Sigh group of lambs. In the Ramp group, PBF fell (by 54+/-10%) as airway pressure increased (r(2)=0.99), although the PBF did not increase again as the Pao was subsequently reduced. The OI decreased (by 47+/-9%) reflecting improved oxygenation at high Pao levels during HF ...

Source: www.ncbi.nlm.nih.gov --- 49 days ago
Related Articles Intra-thyroid Blood Flow in Plummer's disease. Intern Med. 2008;47(11):1065-6 Authors: Kurita S, Ando H, Kaneko S, Takamura T PMID: 18520123 [PubMed - in process] ...

Source: www.ncbi.nlm.nih.gov --- 53 days ago
Related Articles [Advance prediction of Mild Cognitive Impairment (MCI) using (99m)Tc-ECD SPECT brain Blood Flow imaging] Nippon Ronen Igakkai Zasshi. 2008 Mar;45(2):202-12 Authors: Kawasaki Y AIM: Mild Cognitive Impairment (MCI) is considered as a precursor state of Alzheimer disease (AD). SPECT brain Blood Flow imaging was investigated in MCI and it's relevance to the prognosis of MCI was evaluated in an attempt define the characteristics of brain Blood Flow imaging of MCI (amnestic MCI; aMCI) converting to AD. METHODS: Ninety-two patients over 60 years old with amnesia were studied. (99m)Tc-ECD SPECT brain Blood Flow examinations of the subject under drug-free conditions were conducted and imaging was analyzed according to the first clinical diagnosis. Patients given a diagnosis of MCI on the first clinical diagnosis, were examined again after 2 years and the SPECT imaging before 2 years previously was classified and analyzed. RESULTS: Of them, there were 35 MCI patients, converting of 13 AD patients (37.1%; aMCI), 10 MCI patients (28.6%; non-converter), 4 depression patients (11.4%; Depression type MCI (dMCI)), 1 Geriatric psychosis patient, but 7 patients dropped out. In the aMCI group, relative hypoperfusion was recognized in the posterior cingulate and the precuneus. In the dMCI group, relative hypoperfusion was recognized in the dorsolateral prefrontal cortex (DLPFC) and the anterior cingulate. In the non-converter group, relat ...

Source: www.moreover.com --- 32 days ago
Researchers have found the first direct proof that a key protein drives the clogging of arteries in two ways, and that lowering levels of it opens them up, according to study results published in the June edition of the journal Circulation. ...

Source: www.ncbi.nlm.nih.gov --- 52 days ago
Related Articles Tumor Blood Flow measured by PET dynamic imaging of first-pass 18F-FDG uptake: a comparison with 15O-labeled water-measured Blood Flow. J Nucl Med. 2008 Apr;49(4):517-23 Authors: Mullani NA, Herbst RS, O'Neil RG, Gould KL, Barron BJ, Abbruzzese JL PET molecular imaging of 15O-labeled water is the gold standard for measuring Blood Flow in humans. However, this requires an on-site cyclotron to produce the short-lived 15O tracer, which is cost-prohibitive for most clinical PET centers. The purpose of this study was to determine if the early uptake of 18F-FDG could be used to measure regional Blood Flow in tumors in the absence of 15O-water. METHODS: PET scans were obtained in patients being evaluated for tumor perfusion and glucose metabolism in a phase I dose-escalating protocol for endostatin, a novel antiangiogenic agent. A 2-min perfusion scan was performed with a bolus injection of 2,220 MBq (60 mCi) of 15O-water, which was followed by a 370-MBq (10 mCi) dose of 18F-FDG. Four sequential scans of 18F-FDG uptake were acquired, consisting of an early 2-min uptake scan-or first-pass scan-and 3 sequential 15-min late 18F-FDG uptake scans. Regions of interest (ROIs) were drawn on 2 or more tumor sites and on back muscle, as a control ROI, for each patient. Arterial Blood concentration was derived from the PET scans by drawing an ROI over a large artery in the field of view. Blood Flow was computed with a simple 1-compartme ...

Source: www.medicinenet.com --- 14 days ago
Title: ELS Plus CPR Boosts Blood Flow After Cardiac Arrest Category: Health News Created: 7/10/2008 2:00:00 AM Last Editorial Review: 7/10/2008 ...

Source: www.startribune.com --- 4 days ago
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Source: www.sciam.com --- 34 days ago
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