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https://www.readbyqxmd.com/read/28110422/interventions-for-neurocognitive-dysfunction
#1
REVIEW
Jacqueline Ellero, Michal Lubomski, Bruce Brew
PURPOSE OF REVIEW: This study aimed to evaluate current barriers to HIV cure strategies and interventions for neurocognitive dysfunction with a particular focus on recent advancements over the last 3 years. RECENT FINDINGS: Optimal anti-retroviral therapy (ART) poses challenges to minimise neurotoxicity, whilst ensuring blood-brain barrier penetration and minimising the risk of cerebrovascular disease. CSF biomarkers, BCL11B and neurofilament light chain may be implicated with a neuroinflammatory cascade leading to cognitive impairment...
January 21, 2017: Current HIV/AIDS Reports
https://www.readbyqxmd.com/read/28110411/development-of-the-siope-dipg-network-registry-and-imaging-repository-a-collaborative-effort-to-optimize-research-into-a-rare-and-lethal-disease
#2
Sophie E M Veldhuijzen van Zanten, Joshua Baugh, Brooklyn Chaney, Dennis De Jongh, Esther Sanchez Aliaga, Frederik Barkhof, Johan Noltes, Ruben De Wolf, Jet Van Dijk, Antonio Cannarozzo, Carin M Damen-Korbijn, Jan A Lieverst, Niclas Colditz, Marion Hoffmann, Monika Warmuth-Metz, Brigitte Bison, David T W Jones, Dominik Sturm, Gerrit H Gielen, Chris Jones, Esther Hulleman, Raphael Calmon, David Castel, Pascale Varlet, Géraldine Giraud, Irene Slavc, Stefaan Van Gool, Sandra Jacobs, Filip Jadrijevic-Cvrlje, David Sumerauer, Karsten Nysom, Virve Pentikainen, Sanna-Maria Kivivuori, Pierre Leblond, Natasha Entz-Werle, Andre O von Bueren, Antonis Kattamis, Darren R Hargrave, Péter Hauser, Miklos Garami, Halldora K Thorarinsdottir, Jane Pears, Lorenza Gandola, Giedre Rutkauskiene, Geert O Janssens, Ingrid K Torsvik, Marta Perek-Polnik, Maria J Gil-da-Costa, Olga Zheludkova, Liudmila Shats, Ladislav Deak, Lidija Kitanovski, Ofelia Cruz, Andres Morales La Madrid, Stefan Holm, Nicolas Gerber, Rejin Kebudi, Richard Grundy, Enrique Lopez-Aguilar, Marta Zapata-Tarres, John Emmerik, Tim Hayden, Simon Bailey, Veronica Biassoni, Maura Massimino, Jacques Grill, William P Vandertop, Gertjan J L Kaspers, Maryam Fouladi, Christof M Kramm, Dannis G van Vuurden
Diffuse intrinsic pontine glioma (DIPG) is a rare and deadly childhood malignancy. After 40 years of mostly single-center, often non-randomized trials with variable patient inclusions, there has been no improvement in survival. It is therefore time for international collaboration in DIPG research, to provide new hope for children, parents and medical professionals fighting DIPG. In a first step towards collaboration, in 2011, a network of biologists and clinicians working in the field of DIPG was established within the European Society for Paediatric Oncology (SIOPE) Brain Tumour Group: the SIOPE DIPG Network...
January 21, 2017: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/28110367/accurate-simultaneous-quantification-of-liver-steatosis-and-iron-overload-in-diffuse-liver-diseases-with-mri
#3
Manuela França, Ángel Alberich-Bayarri, Luis Martí-Bonmatí, Pedro Oliveira, Francisca Emanuel Costa, Graça Porto, José Ramón Vizcaíno, Javier Sanchez Gonzalez, Eduardo Ribeiro, João Oliveira, Helena Pessegueiro Miranda
PURPOSE: To evaluate the diagnostic performances of 3 Tesla multi-echo chemical shift-encoded gradient echo magnetic resonance (MECSE-MR) imaging to simultaneously quantify liver steatosis and iron overload in a wide spectrum of diffuse liver diseases having biopsy as reference standard. METHODS: MECSE-MR-acquired images were used to calculate fat fraction and iron content in a single breath-hold in 109 adult patients. Proton density fat fraction (PDFF) was prospectively estimated using complex-based data reconstruction with multipeak fat modeling...
January 21, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28110361/the-impact-of-routine-whole-spine-mri-screening-in-the-evaluation-of-spinal-degenerative-diseases
#4
Rishi Mugesh Kanna, Younis Kamal, Anupama Mahesh, Prakash Venugopal, Ajoy Prasad Shetty, S Rajasekaran
PURPOSE: Magnetic resonance imaging (MRI) of the spine is a sensitive investigation, which not only provides detailed images of the spinal column but also adjacent spinal regions and para-vertebral organ systems. Such incidental findings (IF) can be asymptomatic but significant. The efficacy of whole spine T2 sagittal screening in providing additional information has been demonstrated in several spinal diseases but its routine use in patients with spinal degenerative diseases has not been studied...
January 21, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28110346/prognostic-value-of-molecular-and-imaging-biomarkers-in-patients-with-supratentorial-glioma
#5
Egesta Lopci, Marco Riva, Laura Olivari, Fabio Raneri, Riccardo Soffietti, Arnoldo Piccardo, Alberto Bizzi, Pierina Navarria, Anna Maria Ascolese, Roberta Rudà, Bethania Fernandes, Federico Pessina, Marco Grimaldi, Matteo Simonelli, Marco Rossi, Tommaso Alfieri, Paolo Andrea Zucali, Marta Scorsetti, Lorenzo Bello, Arturo Chiti
PURPOSE: We evaluated the relationship between (11)C-methionine PET ((11)C-METH PET) findings and molecular biomarkers in patients with supratentorial glioma who underwent surgery. METHODS: A consecutive series of 109 patients with pathologically proven glioma (64 men, 45 women; median age 43 years) referred to our Institution from March 2012 to January 2015 for tumour resection and who underwent preoperative (11)C-METH PET were analysed. Semiquantitative evaluation of the (11)C-METH PET images included SUVmax, region of interest-to-normal brain SUV ratio (SUVratio) and metabolic tumour volume (MTV)...
January 21, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28109978/structural-brain-alteration-in-survivors-of-acute-lymphoblastic-leukemia-with-chemotherapy-treatment-a-voxel-based-morphometry-and-diffusion-tensor-imaging-study
#6
Liwei Zou, Lianzi Su, Jiajia Xu, Li Xiang, Longsheng Wang, Zhimin Zhai, Suisheng Zheng
OBJECTIVE: To assess structural brain changes in survivors of acute lymphoblastic leukemia (ALL) with chemotherapy treatment by combining voxel-based morphometry (VBM) and tract-based spatial statistics (TBSS). METHODS: 28 ALL patients (mean age: 40.71±8.58 years, years since diagnosis: 7-38) and 20 age-matched control subjects (mean age: 42.95±6.39 years) selected in this study with 3D T1 and diffusion tensor imaging acquired on a 3.0T Siemens MRI scanner. The ALL group had a history of chemotherapy treatment and off-therapy at least for 3 years was enrolled...
January 18, 2017: Brain Research
https://www.readbyqxmd.com/read/28109737/retinal-oxygen-from-animals-to-humans
#7
REVIEW
Robert A Linsenmeier, Hao F Zhang
This article discusses retinal oxygenation and retinal metabolism by focusing on measurements made with two of the principal methods used to study O2 in the retina: measurements of PO2 with oxygen-sensitive microelectrodes in vivo in animals with a retinal circulation similar to that of humans, and oximetry, which can be used non-invasively in both animals and humans to measure O2 concentration in retinal vessels. Microelectrodes uniquely have high spatial resolution, allowing the mapping of PO2 in detail, and when combined with mathematical models of diffusion and consumption, they provide information about retinal metabolism...
January 18, 2017: Progress in Retinal and Eye Research
https://www.readbyqxmd.com/read/28109531/diffusion-weighted-imaging-dwi-of-hepatocellular-carcinomas-a-retrospective-analysis-of-the-correlation-between-qualitative-and-quantitative-dwi-and-tumour-grade
#8
T Jiang, J H Xu, Y Zou, R Chen, L R Peng, Z D Zhou, M Yang
AIM: To evaluate the application of qualitative and quantitative diffusion-weighted imaging (DWI) in predicting the histological grade of hepatocellular carcinoma (HCC). MATERIALS AND METHODS: Two hundred and fifty-four patients with pathologically confirmed HCC who underwent hepatic DWI on a 1.5-T platform (b = 0, 600 s/mm(2)) were evaluated retrospectively. HCCs were divided into well-, moderately, and poorly differentiated groups. The relationships between naked-eye signal intensity (SI), SI values, apparent diffusion coefficient (ADC) values on DWI, and the histopathological differentiation of HCC were analysed...
January 19, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28109298/neuroregenerative-potential-of-intravenous-g-csf-and-autologous-peripheral-blood-stem-cells-in-children-with-cerebral-palsy-a-randomized-double-blind-cross-over-study
#9
Wee-Jin Rah, Young-Ho Lee, Jin-Hwa Moon, Hyun-Ju Jun, Hye-Ryeong Kang, Hani Koh, Hye Jung Eom, Ji Young Lee, Young Jun Lee, Ji Young Kim, Yun-Young Choi, Kyeongil Park, Mi Jung Kim, Seung-Hyun Kim
OBJECTIVE: We performed a randomized, double-blind, cross-over study to assess the neuroregenerative potential of intravenous granulocyte colony-stimulating factor (G-CSF) followed by infusion of mobilized peripheral blood mononuclear cells (mPBMCs) in children with cerebral palsy (CP). METHODS: Children with non-severe CP were enrolled in this study. G-CSF was administered for 5 days, then mPBMCs were collected by apheresis and cryopreserved. One month later (M1), recipients were randomized to receive either mPBMCs or a placebo infusion, and these treatment groups were switched at 7 months (M7) and observed for another 6 months (M13)...
January 21, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28109103/-value-of-diffusion-weighted-imaging-1-h-magnetic-resonance-spectroscopy-and-3d-whole-brain-arterial-spin-labeling-in-the-diagnosis-of-medulloblastoma
#10
Dong-Liang Cheng, Wen-Sheng Wang, Yi-Xin Hu, Meng-Lin Chen, Ge Wen, Li-Na Cheng, Jing Wu, Liu-Qing Yan
OBJECTIVE: To explore the value of diffusion-weighted imaging (DWI), (1)H-magnetic resonance spectroscopy (1H-MRS) and 3D whole-brain arterial spin labeling (3D ASL) in the diagnosis of medulloblastoma in the posterior cranial fossa. METHODS: The magnetic resonance imaging (MRI) findings of 16 patients with pathologically confirmed medulloblastoma in the posterior cranial fossa were analyzed retrospectively. All the patients were examined with plane and enhanced brain MRI scans; 5 patients also underwent examinations with DWI, 12 with MRS, and 5 with 3D ASL...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28108942/compartmentalized-culture-of-perivascular-stroma-and-endothelial-cells-in-a-microfluidic-model-of-the-human-endometrium
#11
Juan S Gnecco, Virginia Pensabene, David J Li, Tianbing Ding, Elliot E Hui, Kaylon L Bruner-Tran, Kevin G Osteen
The endometrium is the inner lining of the uterus. Following specific cyclic hormonal stimulation, endometrial stromal fibroblasts (stroma) and vascular endothelial cells exhibit morphological and biochemical changes to support embryo implantation and regulate vascular function, respectively. Herein, we integrated a resin-based porous membrane in a dual chamber microfluidic device in polydimethylsiloxane that allows long term in vitro co-culture of human endometrial stromal and endothelial cells. This transparent, 2-μm porous membrane separates the two chambers, allows for the diffusion of small molecules and enables high resolution bright field and fluorescent imaging...
January 20, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28108511/biomarker-based-pet-imaging-of-diffuse-intrinsic-pontine-glioma-in-mouse-models
#12
Susanne Kossatz, Brandon Carney, Melanie E Schweitzer, Giuseppe Carlucci, Vesselin Miloushev, Uday B Maachani, Prajwal Rajappa, Kayvan Keshari, David J Pisapia, Wolfgang A Weber, Mark M Souweidane, Thomas Reiner
Diffuse intrinsic pontine glioma (DIPG) is a childhood brainstem tumor with a universally poor prognosis. Here, we characterize on a positron emission tomography (PET) probe for imaging DIPG in vivo. In human histological tissues, the probes target, poly(ADP)ribose polymerase 1 (PARP1), was highly expressed in DIPG compared to normal brain. PET imaging allowed for the sensitive detection of DIPG in a genetically engineered mouse model (GEMM), and probe uptake correlated to histologically determined tumor infiltration...
January 20, 2017: Cancer Research
https://www.readbyqxmd.com/read/28108493/fine-motor-skill-mediates-visual-memory-ability-with-microstructural-neuro-correlates-in-cerebellar-peduncles-in-prematurely-born-adolescents
#13
Alyssa R Thomas, Cheryl Lacadie, Betty Vohr, Laura R Ment, Dustin Scheinost
Adolescents born preterm (PT) with no evidence of neonatal brain injury are at risk of deficits in visual memory and fine motor skills that diminish academic performance. The association between these deficits and white matter microstructure is relatively unexplored. We studied 190 PTs with no brain injury and 92 term controls at age 16 years. The Rey-Osterrieth Complex Figure Test (ROCF), the Beery visual-motor integration (VMI), and the Grooved Pegboard Test (GPT) were collected for all participants, while a subset (40 PTs and 40 terms) underwent diffusion-weighted magnetic resonance imaging...
January 19, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28108320/modulation-on-brain-gray-matter-activity-and-white-matter-integrity-by-apoe-%C3%AE%C2%B54-risk-gene-in-cognitively-intact-elderly-a-multimodal-neuroimaging-study
#14
Suping Cai, Yuanyuan Jiang, Yubo Wang, Xiaoming Wu, Junchan Ren, Min Seob Lee, Sunghoon Lee, Liyu Huang
Apolipoprotein E (APOE) ε4 allele is the genetic risk factor with the most established evidence for sporadic Alzheimer's disease. Previous neuroimaging studies have demonstrated insufficiently consistent functional and structural changes among healthy APOE ε4 carriers when compared to non-carriers. Here, in a cognitively intact elderly group (a total of 110: 45 APOE ε4 carriers, 65 non-carriers), we aimed to investigate the potential role of APOE ε4 in the modulation of grey matter activity, white matter integrity, and brain morphology before the development of clinically significant symptoms and signs, by methods of: amplitude of low frequency fluctuations and regional homogeneity analysis based on resting state fMRI, and fiber tractography approach based on diffusion tensor imaging...
January 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28107493/white-matter-abnormalities-in-two-different-subtypes-of-amnestic-mild-cognitive-impairment
#15
Jianghong Liu, Peipeng Liang, Linlin Yin, Ni Shu, Tengda Zhao, Yi Xing, Fangyu Li, Zhilian Zhao, Kuncheng Li, Ying Han
White matter (WM) degeneration has been found during the course of cognitive decline in both Alzheimer's disease (AD) and amnestic mild cognitive impairment (aMCI), however, it is unclear whether there are different WM microstructural abnormalities between two subtypes of aMCI, including single domain aMCI (aMCI-s) and multiple domain aMCI (aMCI-m). Thirty-two patients of aMCI single-domain (aMCI-s), twenty-three patients of aMCI multiple-domain (aMCI-m) and twenty-three healthy normal controls (NC) participated in this study...
2017: PloS One
https://www.readbyqxmd.com/read/28107411/xenon-enhanced-dual-energy-ct-imaging-in-combined-pulmonary-fibrosis-and-emphysema
#16
Keishi Sugino, Masahiro Kobayashi, Yasuhiko Nakamura, Kyoko Gocho, Fumiaki Ishida, Kazutoshi Isobe, Nobuyuki Shiraga, Sakae Homma
BACKGROUND: Little has been reported on the feasibility of xenon-enhanced dual-energy computed tomography (Xe-DECT) in the visual and quantitative analysis of combined pulmonary fibrosis and emphysema (CPFE). OBJECTIVES: We compared CPFE with idiopathic pulmonary fibrosis (IPF) and chronic obstructive pulmonary disease (COPD), as well as correlation with parameters of pulmonary function tests (PFTs). METHODS: Studied in 3 groups were 25 patients with CPFE, 25 with IPF without emphysema (IPF alone), 30 with COPD...
2017: PloS One
https://www.readbyqxmd.com/read/28107084/can-diffusion-weighted-imaging-and-related-apparent-diffusion-coefficient-be-a-prognostic-value-in-women-with-breast-cancer
#17
Paola Rabasco, Rocchina Caivano, Vittorio Simeon, Giuseppina Dinardo, Antonella Lotumolo, Matilde Gioioso, Antonio Villonio, Giancarlo Iannelli, Felice D'Antuono, Alexis Zandolino, Luca Macarini, Giuseppe Guglielmi, Aldo Cammarota
PURPOSE: To analyze diffusion-weighted imaging (DWI) and the related apparent diffusion coefficient (ADC) in women with breast cancer, correlating these values with the presence at 3 years of distant metastases, and to demonstrate that DWI-Magnetic Resonance Imaging (MRI) and related ADC values may represent a prognostic value in the study of women with breast cancer. MATERIALS AND METHODS: Sixty women (aged 45-73 years) affected with breast cancer with a follow-up in 3 years were enrolled...
January 20, 2017: Cancer Investigation
https://www.readbyqxmd.com/read/28106567/fractional-anisotropy-and-mean-diffusion-as-measures-of-dopaminergic-function-in-parkinson-s-disease-challenging-results
#18
Niklas Lenfeldt, Johan Eriksson, Björn Åström, Lars Forsgren, Susanna Jakobson
BACKGROUND: Diffusion tensor imaging (DTI) has been purported as an imaging technique to assess dopaminergic degeneration in Parkinson's disease. OBJECTIVE: To test if fractional anisotropy (FA) and mean diffusion (MD) in the basal ganglia as measured by DTI correlates with dopaminergic function as measured by dopamine transporter (DAT) and dopamine D2-receptor (D2R) SPECT. METHODS: One-hundred and eleven patients with Parkinson's disease (71±10 years) and thirty-one controls (68±7 years) performed DTI, DAT and D2R SPECT at baseline and four follow-ups (1-year: 89 patients/zero controls; 3-year: 72/11; 5-year: 48/17; and 8-year: 13/13)...
January 17, 2017: Journal of Parkinson's Disease
https://www.readbyqxmd.com/read/28106156/tunable-multifunctional-thermal-metamaterials-manipulation-of-local-heat-flux-via-assembly-of-unit-cell-thermal-shifters
#19
Gwanwoo Park, Sunggu Kang, Howon Lee, Wonjoon Choi
Thermal metamaterials, designed by transformation thermodynamics are artificial structures that can actively control heat flux at a continuum scale. However, fabrication of them is very challenging because it requires a continuous change of thermal properties in materials, for one specific function. Herein, we introduce tunable thermal metamaterials that use the assembly of unit-cell thermal shifters for a remarkable enhancement in multifunctionality as well as manufacturability. Similar to the digitization of a two-dimensional image, designed thermal metamaterials by transformation thermodynamics are disassembled as unit-cells thermal shifters in tiny areas, representing discretized heat flux lines in local spots...
January 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28105707/binge-drinking-differentially-affects-cortical-and-subcortical-microstructure
#20
Laurel S Morris, Nicholas G Dowell, Mara Cercignani, Neil A Harrison, Valerie Voon
Young adult binge drinkers represent a model for endophenotypic risk factors for alcohol misuse and early exposure to repeated binge cycles. Chronic or harmful alcohol use leads to neurochemical, structural and morphological neuroplastic changes, particularly in regions associated with reward processing and motivation. We investigated neural microstructure in 28 binge drinkers compared with 38 matched healthy controls. We used a recently developed diffusion magnetic resonance imaging acquisition and analysis, which uses three-compartment modelling (of intracellular, extracellular and cerebrospinal fluid) to determine brain tissue microstructure features including neurite density and orientation dispersion index (ODI)...
January 20, 2017: Addiction Biology
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