Abstract

Probiotics are a mixture of beneficial live bacteria and/or yeasts that naturally exist in our bodies. Recently, numerous studies have focused on the immunostimulatory effects of single-species or killed multi-species probiotic conditioned mediums on macrophages. This study investigates the immunostimulatory effect of commercially available active, multi-species probiotic conditioned medium (CM) on RAW264.7 murine macrophages. The probiotic CM was prepared by culturing the commercially available probiotic in a cell-culture medium overnight at 37 °C, followed by centrifugation and filter-sterilization to be tested on macrophages. The immunostimulatory effect of different dilution percentages (50%, 75%, 100%) of CM was examined using the MTT assay, proinflammatory cytokine (tumor necrosis factor TNF-alpha) production in macrophages, migration, and phagocytosis assays. For all the examined CM ratios, the percentages of cell viability were > 80%. Regarding the migration scratch, TNF-alpha and phagocytosis assays, CM demonstrated a concentration-dependent immunostimulatory effect. However, the undiluted CM (100%) showed a significant (p-value < 0.05) stimulatory effect compared to the positive and negative controls. The findings suggest that the secretions and products of probiotics, as measured in the CM, may be closely associated with their immune-boosting effects. Understanding this relationship between probiotic secretions and immune function is crucial for further exploring the potential benefits of probiotics in enhancing overall health and well-being.

Details

Title
Evaluation of immunomodulatory potential of probiotic conditioned medium on murine macrophages
Author
Al-Najjar, Mohammad A. A. 1 ; Abdulrazzaq, Shaymaa B. 1 ; Alzaghari, Lujain F. 2 ; Mahmod, Asma Ismail 2 ; Omar, Amin 1 ; Hasen, Eliza 2 ; Athamneh, Tamara 3 ; Talib, Wamidh H. 4 ; Chellappan, Dinesh Kumar 5 ; Barakat, Muna 1 

 Applied Science Private University, Faculty of Pharmacy, Amman, Jordan (GRID:grid.411423.1) (ISNI:0000 0004 0622 534X) 
 Middle East University, MEA Research Center, Amman, Jordan (GRID:grid.449114.d) (ISNI:0000 0004 0457 5303) 
 Jordan University of Science and Technology, Institute of Nanotechnology, Irbid, Jordan (GRID:grid.37553.37) (ISNI:0000 0001 0097 5797) 
 Applied Science Private University, Faculty of Allied Medical Sciences, Amman, Jordan (GRID:grid.411423.1) (ISNI:0000 0004 0622 534X) 
 International Medical University, Department of Life Sciences, School of Pharmacy, Bukit Jalil, Kuala Lumpur, Malaysia (GRID:grid.411729.8) (ISNI:0000 0000 8946 5787) 
Pages
7126
Publication year
2024
Publication date
2024
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2986724023
Copyright
© The Author(s) 2024. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.