Skip to main content

Advertisement

Log in

Anti-inflammatory effect of l-cysteine (a semi-essential amino acid) on 5-FU-induced oral mucositis in hamsters

  • Original Article
  • Published:
Amino Acids Aims and scope Submit manuscript

Abstract

Oral mucositis is an inflammation of the oral mucosa mainly resulting from the cytotoxic effect of 5-fluorouracil (5-FU). The literature shows anti-inflammatory action of l-cysteine (l-cys) involving hydrogen sulfide (H2S). In view of these properties, we investigate the effect of l-cys in oral mucositis induced by 5-FU in hamsters. The animals were divided into the following groups: saline 0.9%, mechanical trauma, 5-FU 60–40 mg/kg, l-cys 10/40 mg and NaHS 27 µg/kg. 5-FU was administered on days 1st to 2nd; 4th day excoriations were made on the mucosa; 5th–6th received l-cys and NaHS. For data analysis, histological analyses, mast cell count, inflammatory and antioxidants markers, and immunohistochemistry (cyclooxygenase-2(COX-2)/inducible nitric oxide synthase (iNOs)/H2S) were performed. Results showed that l-cys decreased levels of inflammatory markers, mast cells, levels of COX-2, iNOS and increased levels of antioxidants markers and H2S when compared to the group 5-FU (p < 0.005). It is suggested that l-cys increases the H2S production with anti-inflammatory action in the 5-FU lesion.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

References

Download references

Acknowledgements

The authors gratefully acknowledge the financial support from the National Council of Technological and Scientific Development—CNPq, and Coordination for the Improvement of Higher Education Personnel (CAPES) of Brazil, and Research Foundation for the State of Piauí-FAPEPI.

Funding

This work was supported by FAPEPI-CNPq (PRONEM- EDITAL FAPEPI/MCTIC/CNPq No. 008/2018).

Author information

Authors and Affiliations

Authors

Contributions

Khetyma Moreira Fonseca: methodology, validation, writing—original draft, and visualization. Mac Dionys Rodrigues da Costa: methodology. Valderlon Freitas da Silva: methodology. Jelson Lina de Carvalho: methodology. Ana Patrícia Oliveira: methodology and writing—review and editing. Francisca Beatriz de Melo Sousa: methodology and data curation. André Luis Fernandes Lopes: methodology and visualization. Conceição da Silva Martins: methodology and investigation. Letícia de Sousa Chaves: writing—review and editing. Lucas Antonio Duarte Nicolau: investigation. Gilberto Santos Cerqueira: conceptualization, resources, and project administration. Jand Venes Rolim Medeiros: conceptualization, resources, and supervision. The first draft of the manuscript was written by Khetyma Moreira Fonseca, and all the authors commented on previous versions of the manuscript. All the authors read and approved the final manuscript.

Corresponding author

Correspondence to Jand Venes Rolim Medeiros.

Ethics declarations

Conflict of interest

The authors declare that they have no competing interests.

Ethical approval

It is in accordance with the precepts of Law no 11,794, of Oct 8, 2008 and of Decree no 6899, of Jul 15, 2009, and with rules issued by the National Council for the Control of Animal Experiments (CONCEA), being approved by the ethics committee on the Use of Animals (CEUA/UFPI) with record 002/18 of the Federal University of Piauí—Campus Ministro Reis Velloso, which involves the production, maintenance or use of animals belonging to the phylum Chordata, subphylum Vertebrata (except humans).

Consent to participate

Not applicable.

Consent for publication

Not applicable.

Data availability

Data sharing not applicable to this article as no datasets were generated or analyzed during the current study.

Code availability

Not applicable.

Additional information

Handling editor: F. Blachier.

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Fonseca, K.M., Macda RodriguesCosta, D., da Silva, V.F. et al. Anti-inflammatory effect of l-cysteine (a semi-essential amino acid) on 5-FU-induced oral mucositis in hamsters. Amino Acids 53, 1415–1430 (2021). https://doi.org/10.1007/s00726-021-03062-z

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00726-021-03062-z

Keywords

Navigation