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TOX4

Sigma-Aldrich

In Vitro Toxicology Assay Kit, Neutral Red based

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Synonym(s):
NR uptake assay, Neutral red assay
NACRES:
NA.84

form

liquid

Quality Level

200

usage

 kit sufficient for 1,000 tests

packaging

pkg of 1 kit

storage condition

dry at room temperature

λmax

540 nm

application(s)

cell analysis
detection

detection method

colorimetric

storage temp.

2-8°C

Related Categories

General description

For spectrophotometric measurement of viable cells. Absorbance of converted dye is measured at a wavelength of 540 nm.

Application

In Vitro Toxicology Assay Kit, Neutral Red based has been used:
  • to measure the lysosomal enzyme activity in HB8902 cells
  • to study the cell viability of human alveolar epithelial cells
  • to study the cell viability in fibroblasts

Biochem/physiol Actions

Neutral red (NR) is a red dye that accumulates in the lysosome by actively transferring across the cell membranes. The dye is extracted and the uptake is quantitated by spectroscopy. The NR uptake assay is the most commonly used cytotoxicity test. It is widely applicable in environmental and biomedical studies to estimate the number of viable cells in culture. The NR dye in vitro tissue culture studies is used in assessing viral cytopathogenicity and detection of toxic compounds.

Signal Word

Danger

Hazard Statements

H226 - H317 - H350

Hazard Classifications

Carc. 1B - Flam. Liq. 3 - Skin Sens. 1

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

73.4 °F

Flash Point(C)

23 °C

Regulatory Information

危险化学品

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Thorsten M Seyler et al.
Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association, 33(2), 374-386 (2016-10-04)
To evaluate the biological, immunological, and biomechanical properties of a scaffold derived by architectural modification of a fresh-frozen porcine patella tendon using a decellularization protocol that combines physical, chemical, and enzymatic modalities. Porcine patellar tendons were processed using a decellularization
Edward J Perkins et al.
BMC bioinformatics, 7 Suppl 4, S22-S22 (2007-01-16)
Cell culture systems are useful in studying toxicological effects of chemicals such as Hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), however little is known as to how accurately isolated cells reflect responses of intact organs. In this work, we compare transcriptional responses in livers of
E Borenfreund et al.
Toxicology letters, 24(2-3), 119-124 (1985-02-01)
A method is described which combines the use of a visual morphological cytotoxicity assay with a quantitative neutral red (NR) spectrophotometric test, for the assessment of the effect of toxic agents on 3T3 cells in culture. These sensitive and reproducible
Michael Volkmar et al.
The EMBO journal, 31(6), 1405-1426 (2012-02-02)
In addition to genetic predisposition, environmental and lifestyle factors contribute to the pathogenesis of type 2 diabetes (T2D). Epigenetic changes may provide the link for translating environmental exposures into pathological mechanisms. In this study, we performed the first comprehensive DNA
An improved colorimetric assay for tumor necrosis factor using WEHI 164 cells cultured on novel microtiter plates.
C D Morgan et al.
Journal of immunological methods, 145(1-2), 259-262 (1991-12-15)
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