Perioperative Salivary Alpha-amylase as a Predictor of Delirium After Lower Extremity Vascular Bypass Surgery

Overview

The aim of this study is to evaluate the role of salivary Alpha-amylase as a predictor biomarker of POD in elderly patients undergoing limb bypass surgery.

Delirium is a neuropsychiatric syndrome that is characterized by the sudden onset of altered awareness, decreased ability to maintain attention, and disorders of the mental process. The pathophysiology of Postoperative delirium (POD) is related to postoperative neuroinflammation. Biomarkers not only indicate a certain pathological state, but also provide information about disease activity and progression. Although several biomarkers are reported to predict POD, biomarkers with high sensitivity and specificity are still lacking. Biochemical parameters associated with complement cascade (C3a, C3, C5a) and inflammatory response (IL-17A, IL-33, E-selectin, MMP9) were involved in neurocognitive regulation. Salivary alpha amylase (SAA) enzyme is one of the most important enzyme compositions in the saliva that accounts for 40% to 50% of the total salivary proteins, and most of it is secreted from the parotid gland. SAA is locally produced by the highly differentiated epithelial acinar cells of the exocrine salivary glands, mostly of the parotid glands and plays an important role in carbohydrate hydrolysis.

Conditions

Interventions

Eligibility

Locations (1)

Outcomes