Related Experiment Video
Updated: Jun 17, 2026

Studying the Activity of Neuropeptides and Other Regulators of the Excretory System in the Adult Mosquito
Published on: August 24, 2021
Hyponatremia in pulmonary TB: evidence of ectopic antidiuretic hormone production
1Department of Endocrinology, St Vincent's ospital and Pituitary Research Unit, Garvan Institute of Medical Research, 384 Victoria Street, Darlinghurst, Sydney, New South Wales, Australia. p.lee@garvan.org.au
Abstract:
Hyponatremia is among the most common biochemical abnormalities in hospital inpatients. The syndrome of inappropriate antidiuretic hormone secretion (SIADH) is one of several causes of hyponatremia, particularly in patients with pulmonary diseases. The mechanism of SIADH associated with pulmonary infection is, however, poorly understood. We report an unusual case of hyponatremia in a man with pulmonary TB and central diabetes insipidus with biochemical evidence of ectopic antidiuretic hormone production as a possible mechanism causing hyponatremia.
Related Concept Videos
Diabetes Insipidus II: Pathophysiology
Renal Tubule and Collecting Duct
Proximal Convoluted Tubule (PCT):
The PCT is the initial segment of the renal tubule, extending from the Bowman's capsule that encloses the glomerulus. Its convoluted structure and microvilli-lined cells increase the surface area for reabsorption. The PCT reabsorbs glucose, amino acids, sodium, and water from the filtrate, ensuring essential...
Disorder of Water Balance
Dehydration
Dehydration occurs when the body loses fluids (particularly water).
Causes:
The major causes of dehydration include excessive sweating, fever, vomiting, diarrhea, and diuresis.
Signs and Symptoms:
Symptoms primarily include intense...
Physiology of the Genitourinary System III: Urine Concentration and Dilution
Diabetes Insipidus I: Introduction
Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion