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Das S, Konwar BK. Prophylactic application of vaginal lactic acid bacteria against urogenital pathogens and its prospective use in sanitary suppositories. Int Microbiol 2024; 27:179-202. [PMID: 37258658 DOI: 10.1007/s10123-023-00376-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 04/30/2023] [Accepted: 05/09/2023] [Indexed: 06/02/2023]
Abstract
Beneficial and pathogenic microbes coexist in the vaginal canal, where a diminishing population of lactic acid bacteria may cause recurring urogenital infections. Probiotic bacteria Lactobacillus crispatus, Lactobacillus gasseri, Lactobacillus vaginalis, and pathogenic microbes Enterococcus faecalis, Enterobacter cloacae, Shigella sp., Staphylococcus epidermidis, and Escherichia fergusonii were isolated from vaginal swabs. Lactobacillus sp. and their probiotic culture free supernatant (PCFS) inhibited the growth of the above-mentioned urogenital pathogens. L. crispatus produced both lactic acid and hydrogen peroxide, exhibiting the best antimicrobial potential against the studied pathogens. Lyophilized L. crispatus had a shelf life of 12 months and the lyophilized PCFS also retained its antibacterial property with a minimum inhibition concentration of 1 μg/μL. Carboxy-methyl cellulose-alginate, a green alternative to super-absorbent polymers, was encapsulated with L. crispatus cells. The probiotic in its encapsulated state retained its viability for 21 days, and the bead showed 30% solvent absorptive capacity. PCFS-laced non-woven fabric displayed antibacterial property with no change in its physicochemical properties. These probiotic and postbiotic formulations have excellent prophylactic potential for urogenital infections. Such formulations can be exploited as additives in sanitary suppositories to enhance vaginal health.
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Affiliation(s)
- Shreaya Das
- Department of MBBT, Tezpur University, Napaam-784028, Assam, India
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Tangnorawich B, Magmee A, Roungpaisan N, Toommee S, Parcharoen Y, Pechyen C. Effect of Polybutylene Succinate Additive in Polylactic Acid Blend Fibers via a Melt-Blown Process. Molecules 2023; 28:7215. [PMID: 37894694 PMCID: PMC10608906 DOI: 10.3390/molecules28207215] [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: 08/07/2023] [Revised: 10/18/2023] [Accepted: 10/19/2023] [Indexed: 10/29/2023] Open
Abstract
This work aimed to study the influence of the polybutylene succinate (PBS) content on the physical, thermal, mechanical, and chemical properties of the obtained polylactic acid (PLA)/PBS composite fibers. PLA/PBS blend fibers were prepared by a simple melt-blown process capable of yielding nanofibers. Morphological analysis revealed that the fiber size was irregular and discontinuous in length. Including PBS affected the fiber size distribution, and the fibers had a smoother surface with increased amounts of added PBS. Differential scanning calorimetry analysis (DSC) revealed that the crystallization temperature of the PLA sheet (105.8 °C) was decreased with increasing PBS addition levels down to 91.7 °C at 10 wt.% PBS. This suggests that the addition of PBS may affect PLA crystallization, which is consistent with the X-ray diffraction analysis that revealed that the crystallinity of PLA (19.2%) was increased with increasing PBS addition up to 28.1% at 10 wt% PBS. Moreover, adding PBS increased the tensile properties while the % elongation at break was significantly decreased.
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Affiliation(s)
- Benchamaporn Tangnorawich
- Department of Physics, Faculty of Science and Technology, Thammasat University, Khlong Luang 12120, Thailand
- Thammasat University Center of Excellence in Modern Technology and Advanced Manufacturing for Medical Innovation, Thammasat University, Khlong Luang 12120, Thailand
| | - Areerut Magmee
- Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Khlong Luang 12120, Thailand
| | - Nanjaporn Roungpaisan
- Department of Textile Chemistry Engineering, Faculty of Engineering, Rajamangala University, Khlong Luang 12120, Thailand
| | - Surachet Toommee
- Industrial Arts Program, Faculty of Industrial Technology, Kamphaeng Phet Rajabhat University, Mueang 62000, Thailand
| | - Yardnapar Parcharoen
- Thammasat University Center of Excellence in Modern Technology and Advanced Manufacturing for Medical Innovation, Thammasat University, Khlong Luang 12120, Thailand
- Chulabhorn International College of Medicine, Thammasat University, Khlong Luang 12120, Thailand
| | - Chiravoot Pechyen
- Thammasat University Center of Excellence in Modern Technology and Advanced Manufacturing for Medical Innovation, Thammasat University, Khlong Luang 12120, Thailand
- Department of Materials and Textile Technology, Faculty of Science and Technology, Thammasat University, Khlong Luang 12120, Thailand
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Assis M, Ribeiro LK, Gonçalves MO, Staffa LH, Paiva RS, Lima LR, Coelho D, Almeida LF, Moraes LN, Rosa ILV, Mascaro LH, Grotto RMT, Sousa CP, Andrés J, Longo E, Cruz SA. Polypropylene Modified with Ag-Based Semiconductors as a Potential Material against SARS-CoV-2 and Other Pathogens. ACS APPLIED POLYMER MATERIALS 2022; 4:7102-7114. [PMID: 36873928 PMCID: PMC9972354 DOI: 10.1021/acsapm.2c00744] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 09/05/2022] [Indexed: 06/18/2023]
Abstract
The worldwide outbreak of the coronavirus pandemic (COVID-19) and other emerging infections are difficult and sometimes impossible to treat, making them one of the major public health problems of our time. It is noteworthy that Ag-based semiconductors can help orchestrate several strategies to fight this serious societal issue. In this work, we present the synthesis of α-Ag2WO4, β-Ag2MoO4, and Ag2CrO4 and their immobilization in polypropylene in the amounts of 0.5, 1.0, and 3.0 wt %, respectively. The antimicrobial activity of the composites was investigated against the Gram-negative bacterium Escherichia coli, the Gram-positive bacterium Staphylococcus aureus, and the fungus Candida albicans. The best antimicrobial efficiency was achieved by the composite with α-Ag2WO4, which completely eliminated the microorganisms in up to 4 h of exposure. The composites were also tested for the inhibition of SARS-CoV-2 virus, showing antiviral efficiency higher than 98% in just 10 min. Additionally, we evaluated the stability of the antimicrobial activity, resulting in constant inhibition, even after material aging. The antimicrobial activity of the compounds was attributed to the production of reactive oxygen species by the semiconductors, which can induce high local oxidative stress, causing the death of these microorganisms.
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Affiliation(s)
- Marcelo Assis
- Department
of Physical and Analytical Chemistry, University
Jaume I (UJI), Castelló 12071, Spain
| | - Lara K. Ribeiro
- Department
of Physical and Analytical Chemistry, University
Jaume I (UJI), Castelló 12071, Spain
- CDMF,
LIEC, Federal University of São Carlos
- (UFSCar), São Carlos, SP, 13565-905 Brazil
| | - Mariana O. Gonçalves
- Biomolecules
and Microbiology Laboratory (LaMiB), Biotechnology Graduation Program
(PPGBiotec), Federal University of São
Carlos (UFSCar), São
Carlos, SP, 13565-905, Brazil
| | - Lucas H. Staffa
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São
Carlos, SP, 13565-905, Brazil
- Department
of Materials Engineering, Federal University
of São Carlos - (UFSCar), São Carlos, SP, 13565-905 Brazil
| | - Robert S. Paiva
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São
Carlos, SP, 13565-905, Brazil
| | - Lais R. Lima
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São
Carlos, SP, 13565-905, Brazil
| | - Dyovani Coelho
- CDMF,
LIEC, Federal University of São Carlos
- (UFSCar), São Carlos, SP, 13565-905 Brazil
| | - Lauana F. Almeida
- School of
Agriculture, São Paulo State University
(Unesp), Botucatu, SP, 18610-034, Brazil
- Molecular
Laboratory of Clinical Hospital of Botucatu, Medical School, São Paulo State University (Unesp), Botucatu, SP, 18618-687, Brazil
| | - Leonardo N. Moraes
- School of
Agriculture, São Paulo State University
(Unesp), Botucatu, SP, 18610-034, Brazil
- Molecular
Laboratory of Clinical Hospital of Botucatu, Medical School, São Paulo State University (Unesp), Botucatu, SP, 18618-687, Brazil
| | - Ieda L. V. Rosa
- CDMF,
LIEC, Federal University of São Carlos
- (UFSCar), São Carlos, SP, 13565-905 Brazil
| | - Lucia H. Mascaro
- CDMF,
LIEC, Federal University of São Carlos
- (UFSCar), São Carlos, SP, 13565-905 Brazil
| | - Rejane M. T. Grotto
- School of
Agriculture, São Paulo State University
(Unesp), Botucatu, SP, 18610-034, Brazil
- Molecular
Laboratory of Clinical Hospital of Botucatu, Medical School, São Paulo State University (Unesp), Botucatu, SP, 18618-687, Brazil
| | - Cristina P. Sousa
- Biomolecules
and Microbiology Laboratory (LaMiB), Biotechnology Graduation Program
(PPGBiotec), Federal University of São
Carlos (UFSCar), São
Carlos, SP, 13565-905, Brazil
| | - Juan Andrés
- Department
of Physical and Analytical Chemistry, University
Jaume I (UJI), Castelló 12071, Spain
| | - Elson Longo
- CDMF,
LIEC, Federal University of São Carlos
- (UFSCar), São Carlos, SP, 13565-905 Brazil
| | - Sandra A. Cruz
- Chemistry
Department, Federal University of São
Carlos (UFSCar), São
Carlos, SP, 13565-905, Brazil
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