Diabetes Insipidus (Central vs Nephrogenic) and SIADH Pathophysiology in Human Physiology
Diabetes Insipidus (DI) and Syndrome of Inappropriate Antidiuretic Hormone (SIADH) constitute disorders of water homeostasis driven by dysregulation in the synthesis, secretion, or renal responsiveness to antidiuretic hormone (ADH). The theoretical framework posits that central DI results from ADH deficiency due to hypothalamic damage, while nephrogenic DI arises from V2 receptor resistance; conversely, SIADH is defined by autonomous ADH overproduction leading to dilutional hyponatremia. These conditions illustrate the inverse relationship between plasma tonicity and urine osmolarity mediated strictly by aquaporin-2 channel regulation in the collecting ducts.
Diabetes Insipidus (Central vs Nephrogenic) and SIADH Pathophysiology in Human Physiology
Diabetes Insipidus (DI) and Syndrome of Inappropriate Antidiuretic Hormone (SIADH) constitute disorders of water homeostasis driven by dysregulation in the synthesis, secretion, or renal responsivene…