Prevalence, pathophysiological mechanisms and factors affecting urolithiasis.

Area of Science:

• Nephrology
• Biochemistry
• Pathophysiology

Background:

• Urolithiasis is an ancient and complex disease with unclear pathophysiological mechanisms.
• Multiple theories, including free particle, fixed particle, and Randall's plaque, attempt to explain stone formation.
• Various intrinsic and extrinsic factors contribute to urinary calculus development.

Purpose of the Study:

• To review the composition, prevalence, and incidence of kidney stones.
• To elucidate the pathophysiological mechanisms underlying urolithiasis.
• To detail the roles of various factors in urinary stone formation.

Main Methods:

• Comprehensive literature review on urolithiasis.
• Analysis of factors influencing urinary stone formation.
• Detailed discussion of stone composition and contributing molecules.

Main Results:

• Kidney stone formation is multifactorial, involving complex interactions.
• Key factors include urinary pH, uric acid, parathyroid hormone, citrate, and oxalate.
• Macromolecules such as osteopontin and Tamm-Horsfall protein play significant roles.

Conclusions:

• A unified theory for urolithiasis remains elusive due to its complexity.
• Understanding the interplay of various factors is crucial for managing urinary stones.
• Further research into the roles of specific proteins may offer new therapeutic targets.