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Medical mycology2020; 58(7); 913-918; doi: 10.1093/mmy/myz141

Biogenic silver nanoparticles in the treatment of experimental pythiosis Bio-AgNP in pythiosis therapy.

Abstract: Pythiosis is a rapidly progressing disease that can be lethal to affected individuals due to resistance to available therapeutic protocols. The disease affects mammals, with the largest number of reports in horses and humans. The present study investigated the activity of biogenic silver nanoparticles (bioAgNP) in the treatment of experimental pythiosis. The disease was reproduced in nine female 90-day-old New Zealand rabbits. Animals were divided into three groups: group1 (control, n = 3) daily and topically treated with a nonionized gel-based formulation and 1 ml of sterile distilled water intralesion administered every 48 hours; group 2 (n = 3), daily and topically treated with gel-based formulation containing 1 μg/ml bio-AgNP; group 3 (n = 3), treated with 1 ml bio-AgNP in 1 μg/ml aqueous solution intralesion administered every 48 hours. Animals were treated for 45 days, and the area of subcutaneous lesions was measured every 5 days. Results showed that groups 2 and 3 differed from control group (P < .05) in the lesion area, as well as the amount of hyphae within the lesions. It was observed that lesions of treated animals (groups 2 and 3) did not differ from each other, showing that the application route did not influence the regression of lesions. However, it was observed that one animal from group 2 reached clinical cure at 35 days of treatment. This research is pioneer in the application of nanocomposites for the treatment of experimental pythiosis and showed that bio-AgNP can be powerful allies of integrative medicine and can be included in pythiosis therapeutic protocols.
Publication Date: 2020-02-08 PubMed ID: 32030424DOI: 10.1093/mmy/myz141Google Scholar: Lookup
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  • Journal Article

Summary

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The article discusses a study that examines effectiveness of biogenic silver nanoparticles for treating an experimental form of pythiosis, a disease with known resistance to existing treatments. The researchers used rabbits for testing and discovered that silver nanoparticles could potentially serve as a valuable addition to integrative medicine and the treatment regimen for pythiosis.

What is Pythiosis and Biogenic Silver Nanoparticles?

  • Pythiosis is a severe and rapidly progressing disease that can be fatal. It primarily affects mammals, including humans and particularly horses, and is notoriously resistant to most current therapeutic protocols. These traits make it a focal point for researchers looking into new forms of treatment.
  • Biogenic silver nanoparticles (bio-AgNP) are tiny particles of silver, produced by biological entities, that have shown promising results in antibacterial, anticancer, anti-inflammatory, and antimicrobial applications.

Research Design and Methodology

  • The study utilized nine 90-day-old New Zealand female rabbits, which were divided into three groups for treatment.
  • The first group served as the control group and was treated topically with a nonionized gel formulation and sterile distilled water, administered to the lesion every two days.
  • The second group received a topical gel containing bio-AgNP daily; meanwhile, the third group was treated with an aqueous solution of bio-AgNP, applied directly to the lesion also every two days.
  • The rabbits were treated for a total period of 45 days, and the size of subcutaneous lesions was measured every 5 days to evaluate the effectiveness of the treatments.

Findings

  • Results indicated that both groups treated with bio-AgNP (groups 2 and 3) demonstrated significant reduction in their lesion areas and the amount of hyphae in the lesions compared to the control group.
  • No significant difference was noted between the two experimental groups, suggesting that the route of application did not impact the effectiveness of the nanoparticles. This highlights the versatility of bio-AgNP as a potential treatment method.
  • Additionally, one test subject from the group treated with topical bio-AgNP reached a clinical cure at day 35 of the treatment, lending further credence to the potential effectiveness of this approach.

Conclusion

  • This study represents pioneering research into the potential therapeutic applications of nanocomposites in treating experimental pythiosis.
  • The findings suggest that bio-AgNP can serve as powerful adjuncts to integrative medicine and are worth considering as potential options for inclusion in the treatment protocols for pythiosis.

Cite This Article

APA
Valente JSS, Brasil CL, Braga CQ, Zamboni R, Sallis ESV, Albano APN, Zambrano CG, Franz HC, Pötter L, Panagio LA, Reis GF, Botton SA, Pereira DIB. (2020). Biogenic silver nanoparticles in the treatment of experimental pythiosis Bio-AgNP in pythiosis therapy. Med Mycol, 58(7), 913-918. https://doi.org/10.1093/mmy/myz141

Publication

ISSN: 1460-2709
NlmUniqueID: 9815835
Country: England
Language: English
Volume: 58
Issue: 7
Pages: 913-918

Researcher Affiliations

Valente, Júlia de Souza Silveira
  • Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Brasil, Carolina Litchina
  • Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Braga, Caroline Quintana
  • Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Zamboni, Rosimeri
  • Laboratório Regional de Diagnóstico, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Sallis, Elisa Simone Viégas
  • Laboratório Regional de Diagnóstico, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Albano, Ana Paula Neuschrank
  • Hospital de Clínicas Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Zambrano, Cristina Gomes
  • Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Franz, Helen Cabaldi
  • Departamento de Clínicas Veterinária, Universidade Federal de Pelotas, Pelotas, RS, Brazil.
Pötter, Luciana
  • Centro de Ciências Rurais, Universidade Federal de Santa Maria (UFSM), Santa Maria, RS, Brazil.
Panagio, Luciano Aparecido
  • Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, PR, Brazil.
Reis, Guilherme Fonseca
  • Departamento de Microbiologia, Universidade Estadual de Londrina, Londrina, PR, Brazil.
Botton, Sônia de Avila
  • Departamento de Medicina Veterinária Preventiva, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil.
Pereira, Daniela Isabel Brayer
  • Departamento de Microbiologia e Parasitologia, Universidade Federal de Pelotas, Pelotas, RS, Brazil.

MeSH Terms

  • Animals
  • Humans
  • Metal Nanoparticles / therapeutic use
  • Pythiosis / drug therapy
  • Pythium / drug effects
  • Rabbits
  • Silver / therapeutic use

Citations

This article has been cited 2 times.
  1. de Souza Silveira J, Brasil CL, Braga CQ, da Silva Moreira Â, Franz HC, Zamboni R, Sallis ES, Albano AP, Zambrano CG, Araujo LC, de Bona da Silva C, Pötter L, de Avila Botton S, Pereira DIB. Melaleuca alternifolia formulations in the treatment of experimental pythiosis.. Braz J Microbiol 2022 Jun;53(2):1011-1017.
    doi: 10.1007/s42770-022-00720-6pubmed: 35239152google scholar: lookup
  2. Yolanda H, Krajaejun T. History and Perspective of Immunotherapy for Pythiosis.. Vaccines (Basel) 2021 Sep 26;9(10).
    doi: 10.3390/vaccines9101080pubmed: 34696188google scholar: lookup