Functional activity of neutrophils and systemic inflammatory response of Down’s syndrome patients with periodontal disease

Authors

  • Isabelle Rodrigues Freire UNESP
  • Sandra Maria Herondina Coelho Ávila Aguiar UNESP
  • Sandra Helena Penha de Oliveira UNESP

DOI:

https://doi.org/10.20396/bjos.v11i3.8641400

Keywords:

Down syndrome, Periodontal disease, 5-lypoxigenase, Tnf-a

Abstract

Periodontal disease (PD) is characterized as an inflammatory process that compromises the support and protection of the periodontium. Patients with Down’s syndrome (DS) are prone to develop PD. Neutrophils (NE) are the first line of defense against infection and their absence sets the stage for disease. Aim: To compare the activity and function of NE in the peripheral blood from DS patients with and without PD, assisted at the Center for Dental Assistance to Patients with Special Needs affiliated with the School of Dentistry of Araçatuba, Brazil. Methods: Purified NE were collected from peripheral blood of 22 DS patients. NE were used to detect the 5-lypoxigenase (5-LO) expression by RT-PCR. Plasma from peripheral blood was collected to measure tumor necrosis factor-a (TNF-α) and interleukin-8 (IL-8) by ELISA and nitrite (NO3 ) using a Griess assay. Results: Data analysis demonstrated that DS patients with PD present high levels of TNF-a and IL-8 when compared with DS patients without PD. However, there was no statistically significant difference in the levels of NO3 production between the groups. The levels of the inflammatory mediator 5-LO expression increased in DS patients with PD. Conclusions: According with these results, it was concluded that TNF-α and IL-8 are produced by DS patients with PD. Furthermore, DS patients with PD presented high levels of 5-LO expression, suggesting the presence of leukotriene B4 (LTB4 ) in PD, thus demonstrating that the changes in NE function due to the elevation of inflammatory mediators contribute to PD.

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Author Biographies

Isabelle Rodrigues Freire, UNESP

Graduate student in Pediatric Dentistry, School of Dentistry of Araçatuba, UNESP, São Paulo, SP.

Sandra Maria Herondina Coelho Ávila Aguiar, UNESP

Professor, Department of Pediatric and Community Dentistry, School of Dentistry of Araçatuba, UNESP, São Paulo, SP.

Sandra Helena Penha de Oliveira, UNESP

Professor, Department of Basic Sciences, School of Dentistry of Araçatuba, UNESP, São Paulo, SP.

Published

2015-10-27

How to Cite

1.
Freire IR, Aguiar SMHC Ávila, Oliveira SHP de. Functional activity of neutrophils and systemic inflammatory response of Down’s syndrome patients with periodontal disease. Braz. J. Oral Sci. [Internet]. 2015 Oct. 27 [cited 2022 Nov. 27];11(3):422-7. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641400

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