1
|
Racioppo A, Speranza B, Altieri C, Sinigaglia M, Corbo MR, Bevilacqua A. Ultrasound can increase biofilm formation by Lactiplantibacillus plantarum and Bifidobacterium spp. Front Microbiol 2023; 14:1094671. [PMID: 36950165 PMCID: PMC10025361 DOI: 10.3389/fmicb.2023.1094671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 02/20/2023] [Indexed: 03/08/2023] Open
Abstract
The main goal of this research was to study the effect of an Ultrasound (US) treatment on biofilm formation of Lactiplantibacillus plantarum (strains c19 and DSM 1055), Bifidobacterium animalis subsp. lactis DSM 10140, Bifidobacterium longum subsp. longum DSM 20219, and Bifidobacterium longum subsp. infantis DSM 20088. From a methodological point of view, each microorganism was treated through six US treatments, different for the power (10, 30, or 50% of the net power, 130 W), the duration (2, 6, or 10 min) and the application of pulses (0 or 10 s). After the treatment, a biofilm of the strains was let to form on glass slides and the concentration of sessile cells was analyzed for 16 days. Biofilms formed by untreated microorganisms were used as controls. As a first result, it was found that US significantly increased the concentration of sessile cells of B. longum subsp. infantis, while for some other strains US treatment could not affect the formation of biofilm while improving its stability, as found for L. plantarum DSM1055 after 16 days. The variable mainly involved in this positive effect of US was the duration of the treatment, as biofilm formation and stability were improved only for 2 min-treatments; on the other hand, the effect of power and pulses were strain-dependent. In conclusion, the results suggest practical implication of a US pre-treatment for various fields (improvement of adhesion of microorganisms useful in food or in the gut, biomedical and environmental industries), although further investigations are required to elucidate the mode of action.
Collapse
|
2
|
Synergistic antibacterial effects of low-intensity ultrasound and peptide LCMHC against Staphylococcus aureus. Int J Food Microbiol 2022; 373:109713. [DOI: 10.1016/j.ijfoodmicro.2022.109713] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 04/28/2022] [Accepted: 05/05/2022] [Indexed: 11/20/2022]
|
3
|
Wang Y, Xu Y, Guo X, Wang L, Zeng J, Qiu H, Tan Y, Chen D, Zhao H, Gu Y. Enhanced antimicrobial activity through the combination of antimicrobial photodynamic therapy and low-frequency ultrasonic irradiation. Adv Drug Deliv Rev 2022; 183:114168. [PMID: 35189265 DOI: 10.1016/j.addr.2022.114168] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 02/09/2022] [Accepted: 02/14/2022] [Indexed: 12/14/2022]
Abstract
The rapid increase of antibiotic resistance in pathogenic microorganisms has become one of the most severe threats to human health. Antimicrobial photodynamic therapy (aPDT), a light-based regimen, has offered a compelling nonpharmacological alternative to conventional antibiotics. The activity of aPDT is based on cytotoxic effect of reactive oxygen species (ROS), which are generated through the photosensitized reaction between photon, oxygen and photosensitizer. However, limited by the penetration of light and photosensitizers in human tissues and/or the infiltration of oxygen and photosensitizers in biofilms, the eradication of deeply located or biofilm-associated infections by aPDT remains challenging. Ultrasound irradiation bears a deeper penetration in human tissues than light and, sequentially, can promote drug delivery through cavitation effect. As such, the combination of ultrasound and aPDT represents a potent antimicrobial strategy. In this review, we summarized the recent progresses in the area of the combination therapy using ultrasound and aPDT, and discussed the potential mechanisms underlying enhanced antimicrobial effect by this combination therapy. The future research directions are also highlighted.
Collapse
Affiliation(s)
- Ying Wang
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China.
| | - Yixuan Xu
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Xianghuan Guo
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China; Medical School of Chinese PLA, Beijing 100853, China
| | - Lei Wang
- Institute of Medical Photonics, Beijing Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing 100083, China
| | - Jing Zeng
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Haixia Qiu
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Yizhou Tan
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China
| | - Defu Chen
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing 100081, China
| | - Hongyou Zhao
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing 100081, China
| | - Ying Gu
- Department of Laser Medicine, the First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China; Institute of Engineering Medicine, Beijing Institute of Technology, Beijing 100081, China; Precision Laser Medical Diagnosis and Treatment Innovation Unit, Chinese Academy of Medical Sciences, Beijing 100000, China.
| |
Collapse
|