Abstract

Respiratory syncytial virus (RSV) is a leading cause of Acute Respiratory Tract Infections (ARTIs) in young children. However, there is currently no vaccine or treatment available for children. Here, we demonstrated that nasal-spraying probiotics containing 5 billion of Bacillus spores (LiveSpo Navax) is an effective symptomatic treatment in a 6-day randomized controlled clinical study for RSV-infected children (n = 40–46/group). Navax treatment resulted in 1-day faster recovery-time and 10–50% better efficacy in relieving ARTI symptoms. At day 3, RSV load and level of pro-inflammatory cytokines in nasopharyngeal samples was reduced by 630 folds and 2.7–12.7 folds respectively. This showed 53-fold and 1.8–3.6-fold more effective than those in the control-standard of care-group. In summary, nasal-spraying Bacillus spores can rapidly and effectively relieve symptoms of RSV-induced ARTIs while exhibit strong impacts in reducing viral load and inflammation. Our nasal-spraying probiotics may provide a basis for simple-to-use, low-cost, and effective treatment against viral infection in general.

Details

Title
Nasal-spraying Bacillus spores as an effective symptomatic treatment for children with acute respiratory syncytial virus infection
Author
Tran, Dien Minh 1 ; Tran, Tu Thanh 2 ; Phung, Thuy Thi Bich 3 ; Bui, Huyen Thi 4 ; Nguyen, Phuc Thanh Thi 5 ; Vu, Tam Thi 5 ; Ngo, Nga Thi Phuong 5 ; Nguyen, Mai Thi 5 ; Nguyen, Anh Hoa 6 ; Nguyen, Anh Thi Van 7 

 National Children’s Hospital, Department of Surgical Intensive Care Unit, Hanoi, Vietnam 
 National Children’s Hospital, International Center, Hanoi, Vietnam 
 National Children’s Hospital, Department of Molecular Biology for Infectious Diseases, Hanoi, Vietnam 
 VNU University of Science, Vietnam National University, Hanoi, Key Laboratory of Enzyme and Protein Technology, Hanoi, Vietnam (GRID:grid.493130.c); ANABIO R&D Ltd. Company, Spobiotic Research Center, Hanoi, Vietnam (GRID:grid.493130.c) 
 National Children’s Hospital, International Center, Hanoi, Vietnam (GRID:grid.493130.c) 
 ANABIO R&D Ltd. Company, Spobiotic Research Center, Hanoi, Vietnam (GRID:grid.493130.c); LiveSpo Pharma Ltd. Company, Hanoi, Vietnam (GRID:grid.493130.c) 
 VNU University of Science, Vietnam National University, Hanoi, Key Laboratory of Enzyme and Protein Technology, Hanoi, Vietnam (GRID:grid.493130.c) 
Publication year
2022
Publication date
2022
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2691949308
Copyright
© The Author(s) 2022. 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.