Protocols and Applications of Cellular Metabolomics in Safety Studies Using Precision-Cut Tissue Slices and Carbon 13 NMR

Author(s):  
Gabriel Baverel ◽  
Sophie Renault ◽  
Hassan Faiz ◽  
Maha El Hage ◽  
Catherine Gauthier ◽  
...  
Author(s):  
Hakan Ancin

This paper presents methods for performing detailed quantitative automated three dimensional (3-D) analysis of cell populations in thick tissue sections while preserving the relative 3-D locations of cells. Specifically, the method disambiguates overlapping clusters of cells, and accurately measures the volume, 3-D location, and shape parameters for each cell. Finally, the entire population of cells is analyzed to detect patterns and groupings with respect to various combinations of cell properties. All of the above is accomplished with zero subjective bias.In this method, a laser-scanning confocal light microscope (LSCM) is used to collect optical sections through the entire thickness (100 - 500μm) of fluorescently-labelled tissue slices. The acquired stack of optical slices is first subjected to axial deblurring using the expectation maximization (EM) algorithm. The resulting isotropic 3-D image is segmented using a spatially-adaptive Poisson based image segmentation algorithm with region-dependent smoothing parameters. Extracting the voxels that were labelled as "foreground" into an active voxel data structure results in a large data reduction.


1996 ◽  
Vol 5 (2) ◽  
pp. 68-72 ◽  
Author(s):  
Christine M. Rankovic ◽  
William M. Rabinowitz ◽  
Gregory L. Lof

The Audiokinetron is a device that processes music for earphone presentation to patients undergoing auditory integration training, a treatment for individuals with autism and other developmental disabilities. Intensity levels produced by the Audiokinetron were measured under realistic listening conditions with a KEMAR manikin substituted for a patient. Average levels at the eardrum were 110 dB SPL when the device was adjusted to the highest setting employed by a local, trained AIT practitioner and 118 dB SPL at the maximum setting of the device. These levels are potentially harmful to hearing and warrant further safety studies of AIT instruments and protocols.


2008 ◽  
Vol 36 (8) ◽  
pp. 51
Author(s):  
ELIZABETH MECHCATIE
Keyword(s):  

2005 ◽  
Vol 43 (01) ◽  
Author(s):  
HU Kasper ◽  
E Konze ◽  
D Stippel ◽  
U Drebber ◽  
HP Dienes

2018 ◽  
Vol 28 (4) ◽  
pp. 1213-1217
Author(s):  
Jovana Džoljić ◽  
Ljiljana Đorđević

Food and Agricultural Organization as a “sweeteners” consider products used for sweetening derived from sugar crops, cereals, fruits or milk, or that are produced by insects. Sweeteners, as an additive, have important role for technological functions of food, especially in providing texture, bulk and color, and also as preservative agents. Regardless the numerous sweeteners, alternative sweeteners to sucrose are in main focus for implementation in food industry. Nowadays Food and Agricultural Organization and World Health Organization Food standards, Codex Alimentarius Commission (2018) accepted list of 27 food additives that have the functional class “sweetener”. Nowadays, alternative sweeteners and their application in food technology are in main focus of scientist. Stevia plant stands for one of the most important natural intense sweetener, since stevia glycosides are almost 400 times sweeter than sucrose. Extracts of stevia represents a powerful tool for reducing sugars in food and beverages, which can be acceptable substitutes to full sugar versions of this products. Regarding the data of Euromonitor international, new food products containing stevia grew 10% from 2016 to 2017. The biggest increment in stevia use was noticed in categories of snacks, juice drinks, dairy, carbonated soft drinks and confectionery. Barriocanal et al. (2008) highlighted that safety studies reported no negative side effects of stevia use. Can be expected that in recent future use of S. rebaudiana as sweetener would be extended to almost all the world’s countries, regarding all discovered beneficial health effects.


1959 ◽  
Author(s):  
L.A. Beach ◽  
A.G. Pieper ◽  
M.P. Young

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