Cross-interactions between Norepinephrine, Methicillin-Resistant Staphylococcus aureus and Human Osteoblast Cells in Culture Conditions
Abstract
Objective: The role of norepinephrine (NE) on growth, adhesion and invasion of methicillin-resistant Staphylococcus aureus (MRSA) ATTC 43300 was examined in human osteoblast (HOB) cells. The effects of NE and/or MRSA on the viability and cell death pathways of HOB cells were also investigated. Furthermore, the alterations of bacterial response to oxidative stress (H2O2) were analyzed in the presence/absence of NE.
Materials and Methods: Bacterial growth was detected spectrophotometrically. The colony counting method was examined for adhesion-invasion. The alteration of HOB cell viability was determined by methyl thiazolyl diphenyl-tetrazolium bromide (MTT) assay. The death pathways of HOB cells were examined microscopically using acridine orange-ethidium bromide dual staining and dichlorofluorescein-diacetate (DCF-DA) dye. The bacterial response to H2O2 was investigated by agar dilution.
Results: The growth of bacterium was not affected in the presence of NE. Bacterial adhesion was decreased by NE (p<0.0001) while high-level NE induced invasion (p=0.013). HOB cell viability was reduced by MRSA and/or NE (p<0.001). MRSA and co-existence of MRSA and NE caused necrosis more than apoptosis in HOB cells (p<0.05). NE did not alter the bacterial response to oxidative stress.
Conclusion: Norepinephrine has different effects on the biological properties of both MRSA and HOB cells.
Keywords
References
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Details
Primary Language
English
Subjects
Clinical Sciences
Journal Section
Research Article
Authors
Defne Gümüş
0000-0003-4070-6924
Türkiye
Gül İpek Gündoğan
0000-0002-9438-6113
Türkiye
Aysun Uyanık Öcal
0000-0001-5255-0133
Türkiye
Nur Elagül
0000-0001-5962-5935
Türkiye
Mine Anğ Küçüker
0000-0001-8978-219X
Türkiye
Publication Date
August 22, 2022
Submission Date
May 31, 2022
Acceptance Date
July 20, 2022
Published in Issue
Year 2022 Volume: 12 Number: 2