Melatonin and glucose metabolism: clinical relevance

Area of Science:

• Endocrinology
• Metabolic research
• Chronobiology

Background:

• Melatonin's role in glucose homeostasis is under active investigation.
• Evidence links melatonin production disturbances to impaired insulin, glucose, and lipid metabolism.
• Melatonin influences insulin secretion in vivo and in vitro.

Purpose of the Study:

• To explore the multifaceted role of melatonin in glucose homeostasis.
• To investigate the connection between melatonin, insulin secretion, and diabetes.
• To assess melatonin's protective effects against oxidative stress in pancreatic beta-cells.

Main Methods:

• Review of existing literature on melatonin and metabolic regulation.
• Analysis of studies investigating melatonin's impact on insulin secretion.
• Examination of genetic studies linking melatonin receptor 1B polymorphism to type 2 diabetes risk.

Main Results:

• Disturbances in melatonin production correlate with impaired metabolic parameters.
• Night-time melatonin levels are associated with insulin concentrations in diabetic patients.
• A specific melatonin receptor polymorphism is linked to increased type 2 diabetes risk.

Conclusions:

• Both endogenous and exogenous melatonin may play a role in diabetes.
• Melatonin influences diabetes by regulating insulin secretion and offering antioxidant protection.
• Pancreatic beta-cells' low antioxidant capacity makes them vulnerable to oxidative stress, a factor melatonin may mitigate.