Perspectives on Matrix Metalloproteinase-8 and Salivary Osteoprotegerin in Orthodontic Strategy in Children with...

Area of Science:

• Pediatric Nephrology
• Orthodontics
• Biochemistry

Background:

• Chronic kidney disease (CKD) in children often leads to bone metabolism disorders.
• Orthodontic treatment is frequently required in children with CKD.
• Matrix metalloproteinase 8 (MMP-8) and osteoprotegerin (OPG) are key indicators of bone turnover.

Purpose of the Study:

• To investigate changes in salivary MMP-8 and OPG levels in children with varying CKD severity.
• To assess the potential of these salivary markers for diagnosing bone metabolic disorders in pediatric CKD patients undergoing orthodontic treatment.

Main Methods:

• Salivary MMP-8 and OPG levels were measured in 76 children.
• Participants were divided into four groups: CKD stages 1-2 (G1), end-stage CKD on hemodialysis (G2), one year post-kidney transplant (G3), and healthy controls (G4).
• All children required orthodontic treatment.

Main Results:

• Salivary MMP-8 and OPG levels were significantly higher in all CKD groups compared to healthy controls.
• MMP-8 levels peaked in the hemodialysis group (G2).
• OPG levels increased in the early CKD (G1) and post-transplant (G3) groups.

Conclusions:

• Elevated salivary MMP-8 and OPG reflect mineral and bone disorders in pediatric CKD.
• These salivary markers show promise for non-invasive prediction and prognosis of bone metabolic disturbances.
• This finding supports their use in early diagnosis of bone metabolism issues in children with CKD.