Periapical cytokine expression in sickle cell disease

Area of Science:

• Immunology
• Genetics
• Oral Medicine

Background:

• Sickle cell anemia (SCA) is a prevalent global genetic disorder.
• SCA patients have a persistently activated immune system with increased proinflammatory mediators.

Purpose of the Study:

• To compare mRNA expression of key cytokines and chemokines in periapical interstitial fluid between SCA patients and healthy controls.
• To investigate potential differences in periapical immune responses in SCA individuals.

Main Methods:

• Real-time polymerase chain reaction (PCR) was used to quantify mRNA levels.
• Samples were collected from periapical fluid of SCA patients, non-SCA patients with apical periodontitis, and healthy controls with vital pulp.
• Analyzed mRNA expression of interferon (IFN-γ), tumor necrosis factor, interleukins (IL-1β, IL-17A, IL-10), and chemokines (CCL2, CCL5).

Main Results:

• SCA patients exhibited significantly higher mRNA expression of Th1-associated cytokines IFN-γ, tumor necrosis factor-α, and IL-1β compared to controls.
• Interleukin-17A and IL-10 mRNA levels were also significantly elevated in SCA patients relative to controls.
• No significant differences in the expression of these inflammatory markers were observed between SCA and non-SCA individuals.

Conclusions:

• SCA patients demonstrate a predisposition towards a proinflammatory state.
• Despite elevated general inflammation in SCA, specific periapical immune responses did not significantly differ between SCA and non-SCA patients with apical periodontitis.