نتایج جستجو برای: نانوزیولیت naa

تعداد نتایج: 3628  

2013
Taleb R. Abu-Zahra Maen K. Hasan Hazem S Hasan

Parthenocissus plant is one of the most attractive outdoor deciduous vines; provides deep green cover to most any object, rapidly climbing by means of tendrils and adhesive disks, can be espaliered against a wall and provides great visual appeal during winter when the leaves have fallen. Rooting the cutting of this plant is difficult without using a rooting hormone, so the present research proj...

Journal: :AJNR. American journal of neuroradiology 2007
L Glodzik-Sobanska J Li L Mosconi A Slowik J Walecki A Szczudlik B Sobiecka M J de Leon

BACKGROUND AND PURPOSE Functional imaging studies suggest that poststroke recovery is related to the reorganization in both contralesional and ipsilesional prefrontal cortex. Little is known, however, about how longitudinal metabolic changes in prefrontal regions relate to the improvement after stroke. We sought to determine whether poststroke recovery is associated with changes in N-acetylaspa...

2015
Benjamin M. Ellingson Noriko Salamon Anthony J. Hardy Langston T. Holly Mohammed Shamji

PURPOSE In the present study we investigated a combination of diffusion tensor imaging (DTI) and magnetic resonance spectroscopic (MRS) biomarkers in order to predict neurological impairment in patients with cervical spondylosis. METHODS Twenty-seven patients with cervical spondylosis were evaluated. DTI and single voxel MRS were performed in the cervical cord. N-acetylaspartate (NAA) and cho...

Journal: :Cancer research 2011
Heisoog Kim Ciprian Catana Eva-Maria Ratai Ovidiu C Andronesi Dominique L Jennings Tracy T Batchelor Rakesh K Jain A Gregory Sorensen

Proton magnetic resonance spectroscopy is increasingly used in clinical studies of brain tumor to provide information about tissue metabolic profiles. In this study, we evaluated changes in the levels of metabolites predominant in recurrent glioblastoma multiforme (rGBM) to characterize the response of rGBM to antiangiogenic therapy. We examined 31 rGBM patients treated with daily doses of cedi...

2017
Yong Xiao Yigang Fu Yi Zhou Jianguo Xia Lina Wang Chunhong Hu

BACKGROUND The aim of this study was to investigate the relationship between dynamic changes of cerebral metabolism and degree of trauma in rabbit models of traumatic brain injury (TBI) by using proton magnetic resonance spectroscopy (¹H-MRS). MATERIAL AND METHODS Thirty-five Chinese rabbits were randomly divided into control, mild, moderate, and severe TBI groups. ¹H-MRS was performed 1, 6, an...

2013
Lucette A. Cysique Kirsten Moffat Danielle M. Moore Tammy A. Lane Nicholas W. S. Davies Andrew Carr Bruce J. Brew Caroline Rae

BACKGROUND Cardiovascular disease (CVD) and premature aging have been hypothesized as new risk factors for HIV associated neurocognitive disorders (HAND) in adults with virally-suppressed HIV infection. Moreover, their significance and relation to more classical HAND biomarkers remain unclear. METHODS 92 HIV- infected (HIV+) adults stable on combined antiretroviral therapy (cART) and 30 age-c...

2014
Maja Bajs Janović Petra Kalember Špiro Janović Pero Hrabač Petra Folnegović Grošić Vladimir Grošić Marko Radoš Neven Henigsberg

BACKGROUND The role of brain metabolites as biological correlates of the intensity, symptoms, and course of major depression has not been determined. It has also been inconclusive whether the change in brain metabolites, measured with proton magnetic spectroscopy, could be correlated with the treatment outcome. METHODS Proton magnetic spectroscopy was performed in 29 participants with a first...

Journal: :Neurology 2003
M Wylezinska A Cifelli P Jezzard J Palace M Alecci P M Matthews

OBJECTIVE To define the extent of neuronal injury and loss in thalamic gray matter in patients with relapsing-remitting (RR) MS and to characterize how these neuronal pathologic changes are related to disease duration. METHODS The authors studied 14 patients with RRMS (Expanded Disability Status Scale score, mean 3.25, range 2.0 to 6.0) and 14 (8 men, 6 women) age-matched healthy controls. St...

2013
Custódia M. L. Gago José A. Monteiro

The effects of Silver Thiosulphate (STS) and Naphtalene Acetic Acid (NAA) (0,45%NAA+1,2% NAA-amide at 500 mg.l) on flowering bud development, anthesis duration, bract longevity and bract photosynthetic rate were studied in Bougainvillea spectabilis ‘Killie Campbell’ plants, under interior conditions. The relationships between bract longevity and the above parameters were also investigated. NAA ...

Journal: :AJNR. American journal of neuroradiology 2005
R Mark Wellard Regula S Briellmann Claire Jennings Graeme D Jackson

BACKGROUND AND PURPOSE Physiologic and scanner variability of proton MR spectroscopy (MRS) measurements can limit the detection of subtle metabolite fluctuations. We assessed the variability of such measurements at 3T and compared two methods to obtain absolute concentrations. METHODS Variability over 14 days was assessed with short-echo, single-voxel proton MRS in 14 control subjects and in ...

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