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Cell Viability Assays

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TLDR
This chapter describes selected assays for the evaluation of cellular viability and proliferation of cell cultures using the formation of the omnipresent reducing agents NADH and NADPH as a marker for metabolic activity in the following assays.
Abstract
This chapter describes selected assays for the evaluation of cellular viability and proliferation of cell cultures. The underlying principle of these assays is the measurement of a biochemical marker to evaluate the cell’s metabolic activity. The formation of the omnipresent reducing agents NADH and NADPH is used as a marker for metabolic activity in the following assays. Using NADH and NADPH as electron sources, specific dyes are biochemically reduced which results in a color change that can be determined with basic photometrical methods. The assays selected for this chapter include MTT, WST, and resazurin. They are applicable for adherent or suspended cell lines, easy to perform, and comparably economical. Detailed protocols and notes for easier handling and avoiding pitfalls are enclosed to each assay.

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Toxicological assessment of nanomaterials: the role of in vitro Raman microspectroscopic analysis.

TL;DR: 3D toxicity plots of spectral markers, as a function of time and dose, are introduced as new methodology for toxicological analysis based on the intrinsic properties of the biomolecular changes, such as cytoplasmic RNA aberrations, protein and lipid damage associated with the toxic response.
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Benznidazole self-emulsifying delivery system: A novel alternative dosage form for Chagas disease treatment.

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Use of a genetically engineered E. coli overexpressing β-glucuronidase accompanied by glycyrrhizic acid, a natural and anti-inflammatory agent, for directed treatment of colon carcinoma in a mouse model

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Effect of High Glucose-Induced Oxidative Stress on Paraoxonase 2 Expression and Activity in Caco-2 Cells.

TL;DR: It is demonstrated that high glucose concentrations triggered glyco-oxidative stress in intestinal cells; the downregulation of PON2 could result in a higher oxidative stress and might contribute to intestinal dysfunction.
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Cytotoxicity of acetylcholinesterase reactivators evaluated in vitro and its relation to their structure.

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References
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Journal ArticleDOI

Neutral red uptake assay for the estimation of cell viability/cytotoxicity.

TL;DR: The neutral red uptake assay provides a quantitative estimation of the number of viable cells in a culture and is cheaper and more sensitive than other cytotoxicity tests (tetrazolium salts, enzyme leakage or protein content).
Journal ArticleDOI

Simple and Inexpensive Fluorescence-Based Technique for High-Throughput Antimalarial Drug Screening

TL;DR: A side-by-side comparison of this new fluorescence assay and a standard radioisotopic method suggest that it may be an ideal method for high-throughput antimalarial drug screening.
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