Neuroendocrine dysfunction in Sjogren's syndrome

Area of Science:

• Neuroimmunology
• Endocrinology
• Autoimmune Diseases

Background:

• The immune, nervous, and endocrine systems interact, influencing inflammatory disease susceptibility.
• The neuroendocrine system comprises central and peripheral components, including the HPA and HPG axes.
• Alterations in the neuroendocrine system are observed in systemic autoimmune diseases.

Purpose of the Study:

• To review the role of the neuroendocrine system in autoimmune diseases.
• To highlight neuroendocrine system dysfunctions in Sjogren's syndrome (SS).
• To explore the link between neuroendocrine disturbances and SS clinical manifestations.

Main Methods:

• Review of recent studies on neuroendocrine system alterations in autoimmune diseases.
• Focus on hypothalamic-pituitary-adrenal (HPA) and hypothalamic-pituitary-gonadal (HPG) axes in SS.
• Examination of neuroendocrine-related molecules in exocrine glands of SS patients.

Main Results:

• Patients with SS show disturbed HPA axis function, with lower ACTH and cortisol levels.
• HPG axis involvement is indicated by estrogen deficiency's association with autoimmune exocrinopathy.
• SS clinical features like fatigue and sicca symptoms may stem from neuroendocrine axis disturbances.

Conclusions:

• The neuroendocrine system plays a critical role in modulating autoimmune disease progression.
• Sjogren's syndrome exhibits significant neuroendocrine dysregulation, particularly in the HPA and HPG axes.
• Further research is needed to understand the molecular interplay between inflammation and neuroendocrine mediators in autoimmune injury.