Regulation of neuron-specific enolase isozyme levels during differentiation of murine neuroblastoma cell cultures

1985 ◽  
Vol 7 (5) ◽  
pp. 867-874 ◽  
Author(s):  
N. Lamandé ◽  
Y. Zeitoun ◽  
F. Gros ◽  
L. Legault
Intervirology ◽  
1978 ◽  
Vol 9 (6) ◽  
pp. 359-361 ◽  
Author(s):  
Abigail L. Smith ◽  
Gregory H. Tignor ◽  
Richard W. Emmons ◽  
James D. Woodie

Chemosensors ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 6 ◽  
Author(s):  
Georgia Paivana ◽  
Theofylaktos Apostolou ◽  
Sophie Mavrikou ◽  
Dimitris Barmpakos ◽  
Grigoris Kaltsas ◽  
...  

In this work, the assessment of the interactions of a bioactive substance applied to immobilized cells in either a two-dimensional (2D) or three-dimensional (3D) arrangement mimicking in vivo tissue conditions is presented. In particular, dopamine (DA) was selected as a stimulant for the implementation of an impedance analysis with a specific type of neural cells (murine neuroblastoma). The aim of this study was the extraction of calibration curves at various frequencies with different known dopamine concentrations for the description of the behavior of dopamine applied to 2D and 3D cell cultures. The results present the evaluation of the mean impedance value for each immobilization technique in each frequency. The differential responses showed the importance of the impedance when frequency is applied in both 2D and 3D immobilization cases. More specifically, in 2D immobilization matrix impedance shows higher values in comparison with the 3D cell culture. Additionally, in the 3D case, the impedance decreases with increasing concentration, while in the 2D case, an opposite behavior was observed.


1988 ◽  
Vol 34 (1) ◽  
pp. 19-23 ◽  
Author(s):  
W. A. Webster ◽  
K. M. Charlton ◽  
G. A. Casey

Two strains of street rabies virus from striped skunks (Mephitis mephitis) were used to infect either a murine neuroblastoma (NA 1300) or a baby hamster kidney (BHK-21/C13) cell culture and the cell infection rates were noted during 4 days postinfection. These cultures were then passaged for four consecutive passages, and the viruses obtained in the supernatant fluids of passage 4 were then treated as original isolates and used to infect both neuroblastoma and baby hamster kidney cells. The mortality period in Swiss white mice caused by the various virus suspensions was noted. The virus strain from the brain of skunks from Saskatchewan infected neuroblastoma and baby hamster kidney cells equally well, produced similar virus titres in supernatant fluids after four subcultures in both cell types, and appeared to produce similar mortality periods in mice from either the original brain tissue or from cell culture supernatant fluids. On the other hand, the virus from the brains of skunks from Ontario readily infected neuroblastoma but poorly infected baby hamster kidney cell cultures. Passage of this strain through four subcultures in both cell types produced virus titres in the supernatant fluids of equal magnitude. However, reisolation of the virus from the supernatant fluid of passage 4 in neuroblastoma cell cultures showed a similar pattern to that from the original brain, while the virus from baby hamster kidney cell passage supernatant fluid was considerably altered. Although the mortality period in mice was similar with virus from the brain and neuroblastoma cell cultures, this period was shortened when mice were inoculated with baby hamster kidney culture supernatant virus. Virus from the salivary glands of Ontario skunks readily infected both cell types, producing similar titres at 4 days postinfection. The mortality period of mice inoculated with salivary gland suspensions was shorter than of those inoculated with brain suspensions. These findings demonstrate differences in rabies street virus strains that may have affected diagnostic procedures.


Sensors ◽  
2019 ◽  
Vol 19 (21) ◽  
pp. 4639 ◽  
Author(s):  
Elvira García ◽  
Pablo Pérez ◽  
Alberto Olmo ◽  
Roberto Díaz ◽  
Gloria Huertas ◽  
...  

High-throughput data analysis challenges in laboratory automation and lab-on-a-chip devices’ applications are continuously increasing. In cell culture monitoring, specifically, the electrical cell-substrate impedance sensing technique (ECIS), has been extensively used for a wide variety of applications. One of the main drawbacks of ECIS is the need for implementing complex electrical models to decode the electrical performance of the full system composed by the electrodes, medium, and cells. In this work we present a new approach for the analysis of data and the prediction of a specific biological parameter, the fill-factor of a cell culture, based on a polynomial regression, data-analytic model. The method was successfully applied to a specific ECIS circuit and two different cell cultures, N2A (a mouse neuroblastoma cell line) and myoblasts. The data-analytic modeling approach can be used in the decoding of electrical impedance measurements of different cell lines, provided a representative volume of data from the cell culture growth is available, sorting out the difficulties traditionally found in the implementation of electrical models. This can be of particular importance for the design of control algorithms for cell cultures in tissue engineering protocols, and labs-on-a-chip and wearable devices applications.


2002 ◽  
Vol 67 (6) ◽  
pp. 2540-2548 ◽  
Author(s):  
Akira Ota ◽  
Satoshi Yoshida ◽  
Takahide Nomura ◽  
Shigeru Matsui ◽  
Yasumichi Hagino ◽  
...  

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