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Al-Hazmi NE, Naguib DM. Antioxidant and Antibacterial Activities of Nano-probiotics Versus Free Probiotics Against Gastrointestinal Pathogenic Bacteria. Indian J Microbiol 2024; 64:141-152. [PMID: 38468740 PMCID: PMC10924813 DOI: 10.1007/s12088-023-01140-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/03/2023] [Indexed: 03/13/2024] Open
Abstract
Antibiotic-resistant pathogenic bacteria and the oxidative stress related to their infections are dangerous health problems. Finding new safe, effective antibacterial and antioxidant agents is an urgent global need. Probiotics are a strong candidate for possible antibacterial and antioxidant agents. The delivery of these probiotics without any effect on gastrointestinal digestion is the most important point for their application. The encapsulation of the probiotics on nanoparticles or other supports is a well-known method for the safe delivery of the probiotics. Little information is known about the effect of the probiotic encapsulation on its antibacterial and antioxidant activity. The present study tried to investigate the effect of probiotic encapsulation on nano-chitosan on its antioxidant activity and antibacterial activity against some pathogenic bacteria. We encapsulated some known probiotic species on nano-chitosan and investigated the antibacterial activity of the nano-probiotics and free probiotics against gastrointestinal pathogenic bacteria. The antioxidant characters of the free and encapsulated probiotics were investigated in terms of DPPH radicle scavenging activity, ferric ion chelating activity, hydroxyl radicle scavenging activity, superoxide anion radicle scavenging activity, and anti-lipid peroxidation activity. Results showed the superiority of the encapsulated probiotics as antibacterial and antioxidant agents over the free ones. The encapsulation improved the antibacterial activity of Sporolactobacillus laevolacticus against Bacteroides fragilis by 134% compared to the free one. Also, significantly, the encapsulation increased the hydroxyl radicle scavenging activity of Enterococcus faecium by about 180% compared to the free one. Nano-chitosan encapsulation synergistically increased the antioxidant and antibacterial activity of the studied probiotics. This can be promising for controlling pathogenic bacteria. Supplementary Information The online version contains supplementary material available at 10.1007/s12088-023-01140-2.
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Affiliation(s)
- Nawal E. Al-Hazmi
- Department of Chemistry, Division of Biology (Microbiology), University College of Qunfudah, Umm Al-Qura University, Al Qunfudhah, Saudi Arabia
| | - Deyala M. Naguib
- Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, Egypt
- Biology Department, Faculty of Science and Arts in Al-Mikhwah, Al-Baha University, Al Mikhwah, Saudi Arabia
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Yang Y, Lu Y, Zhou Y, Sun H, Ma Y, Tan J, Li N, Li H. Identification and characterization of microRNAs, especially gga-miR-181b-5p, in chicken macrophages associated with avian pathogenic E. coli infection. Avian Pathol 2023; 52:185-198. [PMID: 36803112 DOI: 10.1080/03079457.2023.2181146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
AbstractAvian pathogenic E. coli (APEC) is a common pathogen in the poultry industry, which can cause substantial economic losses. Recently, emerging evidence showed that the miRNAs were involved in various viral and bacterial infection. To elucidate the role of miRNAs in chicken macrophages in response to APEC infection, we attempted to investigate the miRNAs expression pattern upon APEC infection via miRNA-seq, and to identify the molecular mechanism of the important miRNAs by using RT-qPCR, Western blotting, dual-luciferase reporter assay, and CCK-8. Results showed that a total of 80 differentially expressed (DE) miRNAs were identified in the comparison of APEC vs. wild type group, which corresponded to 724 target genes. Moreover, the target genes of the identified DE miRNAs were mainly significantly enriched in MAPK signaling pathway, Autophagy-animal, mTOR signaling pathway, ErbB signaling pathway, Wnt signaling pathway, TGF-beta signaling pathway. Remarkably, gga-miR-181b-5p is capable to participate in host immune and inflammatory response against APEC infection via targeting of TGFBR1 to modulate the activation of TGF-beta signaling pathway. Collectively, this study provides a perspective of miRNA expression pattern in chicken macrophages upon APEC infection. These findings provide the insight into miRNAs against APEC infection and gga-miR-181b-5p might be a potential target for treating APEC infection.
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Affiliation(s)
- Yexin Yang
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yue Lu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Yuyang Zhou
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Hongyan Sun
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China.,Joint International Research Laboratory of Agriculture & Agri-Product Safety, Ministry of Education, Yangzhou University, Yangzhou, China
| | - Yuyi Ma
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Jishuang Tan
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Naying Li
- College of Animal Science and Technology, Yangzhou University, Yangzhou, China
| | - Huan Li
- School of Biological and Chemical Engineering, Yangzhou Polytechnic College, Yangzhou University, Yangzhou, China.,Yangzhou Engineering Research Center of Agricultural Products Intelligent Measurement and Control & Cleaner Production, Yangzhou 225009, China
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