Relationship between Glycaemic Control and Oral Immunologic Proteins.

Background: Attaining a good glycaemic control is usually the target for therapy in diabetic patients as this is expected to prevent both acute and chronic complications. Oral infections are however very common among diabetic patients despite the presence of many immunologic proteins in the saliva. This study was designed to determine the impact of glycaemic control on levels of these proteins in diabetic patients.

Methods: Salivary lysozyme, histatins, immunoglobulin A and immunoglobulin G were measured in diabetic patients. The levels of these immunologic proteins were compared between patients whose HbA1c were less than 7% and those whose values were greater than or equal to 7%.

Results: A total of 95 participants were recruited for this study with 37 (38.9%) of them having a median HbA1c of 6.3% (IQR 5.3- 6.6) and the remaining 58 (61.1%) having a median HbA 1c of 9.1% (IQR 8.1-10.5). There was no significant difference in salivary lysozyme (31.24 vs 33.77 ng/ml; p = 0.69), histatins (9.65 vs 9.17 ng/ml; p = 0.27), IgA (12.79 vs 12.19 μg/ml; p = 0.16) and IgG (31.29 vs 32.49 μg/ml; p = 0.85) between the group with good and those with poor glycaemic control.

Conclusion: This study showed that glycaemic control does not impact the levels of salivary immunologic proteins in diabetic patients, so quality attention should be given to oral care to avoid the development of oral complications.