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01-11-2018 | Original Article

N-acetyl-l-cysteine protects dental tissue stem cells against oxidative stress in vitro

Authors: Jasmina Martacic, Milica Kovacevic Filipovic, Suncica Borozan, Zorica Cvetkovic, Tamara Popovic, Aleksandra Arsic, Marija Takic, Vesna Vucic, Maria Glibetic

Published in: Clinical Oral Investigations | Issue 8/2018

Abstract

Objectives

The aim of our study was to investigate whether N-acetyl-l-cysteine (NAC) could protect stem cells from exfoliated deciduous teeth (SHED) against oxidative damage, during in vitro cultivation, to preserve regenerative potential of these cells. Accordingly, we examined the potential of cell culture supplementation with NAC in prevention of lipid peroxidation, unfavorable changes of total lipids fatty acid composition, and the effects on the activity of antioxidant enzymes.

Material and methods

We analyzed the extent of oxidative damage in SHED after 48 h treatment with different NAC concentrations. Cellular lipid peroxidation was determined upon reaction with thiobarbituric acid. All enzyme activities were measured spectrophotometrically, based on published methods. Fatty acid methyl esters were analyzed by gas-liquid chromatography.

Results

Concentration of 0.1 mM NAC showed the most profound effects on SHED, significantly decreasing levels of lipid peroxidation in comparison to control. This dose also diminished the activities of antioxidant enzymes. Furthermore, NAC treatment significantly changed fatty acid composition of cells, reducing levels of oleic acid and monounsaturated fatty acids and increasing linoleic acid, n-6, and total polyunsaturated fatty acid (PUFA) proportions.

Conclusion

Low dose of NAC significantly decreased lipid peroxidation and altered fatty acid composition towards increasing PUFA. The reduced oxidative damage of cellular lipids could be strongly related to improved SHED survival in vitro.

Clinical relevance

Low doses of antioxidants, applied during stem cells culturing and maintenance, could improve cellular characteristics in vitro. This is prerequisite for successful use of stem cells in various clinical applications.

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Title: N-acetyl-l-cysteine protects dental tissue stem cells against oxidative stress in vitro
Authors: Jasmina Martacic
Milica Kovacevic Filipovic
Suncica Borozan
Zorica Cvetkovic
Tamara Popovic
Aleksandra Arsic
Marija Takic
Vesna Vucic
Maria Glibetic
Publication date: 01-11-2018
Publisher: Springer Berlin Heidelberg
Published in: Clinical Oral Investigations / Issue 8/2018
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI: https://doi.org/10.1007/s00784-018-2377-2

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

N-acetyl-l-cysteine protects dental tissue stem cells against oxidative stress in vitro

Abstract

Objectives

Material and methods

Results

Conclusion

Clinical relevance

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Objectives

Material and methods

Results

Conclusion

Clinical relevance

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