Comparative analysis of two colorimetric assays in dental pulp cell density. International Endodontic Journal

Authors

Fernanda Nedel, University of PelotasFollow
Fabiana Naomi Soki, University of Michigan School of DentistryFollow
Marcus Cristian Muniz Conde, CENTRO UNIVERSITÁRIO UNIVATESFollow
Benjamin David Zeitlin, University of the PacificFollow
Sandra Beatriz Chaves Tarquinio, Universidade Federal de PelotasFollow
Jacques E. Nör, University of Michigan School of DentistryFollow
Fabiana Kömmling Seixas, Universidade Federal de PelotasFollow
Flavio F. Demarco, Federal University of PelotasFollow

ORCiD

Dr. Benjamin D. Zeitlin: 0000-0003-0110-0188

Department

Biomedical Sciences

Document Type

Article

Publication Title

International Endodontic Journal

ISSN

0143-2885

Volume

44

Issue

1

DOI

10.1111/j.1365-2591.2010.01796.x.

First Page

59

Last Page

64

Publication Date

Winter 1-1-2011

Abstract

Aim: To compare and contrast two colorimetric assays used for the measurement of proliferation using two dental pulp cell types: dental pulp stem cells (DPSC) and human dental pulp fibroblasts (HDPF). Methodology Dental pulp stem cells or HDPF were seeded at 0.25 × 104 cells per well in 96-well plates. Cell proliferation was evaluated after 24–72 h. At the end of the experimental period, the sulforhodamine B (SRB) assay or a water-soluble tetrazolium salt (WST-1) assay was performed. Optical densities were determined in a microplate reader (Genius; TECAN). Data were analysed by Student’s t-test (comparison between cell types) and one-way anova followed by Tukey test (time-point intervals). Pearson’ correlation tests were performed to compare the two assays for each cell line. Results Both assays showed that DPSC had higher proliferation rates than HDPF. A positive significant correlation between the two colorimetric assays tested for both cell types DPSC (Pearson’s correlation coefficient = 0.847; P < 0.05) and HDPF (Pearson’s correlation coefficient = 0.775; P < 0.05). Conclusion Both tests demonstrated similar trends of cell proliferation, and thus are both appropriate for the evaluation of DPSC and HDPF. The choice of assay is therefore one of the practical applications. SRB stained plates can be dried and stored so may have utility in laboratories where data may require review or when access to analytical equipment is limited. WST-1 assays have the benefit of both ease and speed and may have utility in laboratories requiring either high throughput or rapid analyses.

Recommended Citation

Nedel, F., Soki, F. N., Conde, M. C., Zeitlin, B. D., Tarquinio, S. B., Nör, J. E., Seixas, F. K., & Demarco, F. F. (2011). Comparative analysis of two colorimetric assays in dental pulp cell density. International Endodontic Journal. International Endodontic Journal, 44(1), 59–64. DOI: 10.1111/j.1365-2591.2010.01796.x.
https://scholarlycommons.pacific.edu/dugoni-facarticles/382