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Related Concept Videos

Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
Circadian Rhythms and Gene Regulation02:19

Circadian Rhythms and Gene Regulation

The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
Urodynamic Studies: Uroflowmetry01:19

Urodynamic Studies: Uroflowmetry

Uroflowmetry is a non-invasive urodynamic test designed to measure various aspects of urination, including volume, flow rate, and the time to void. This test is crucial for diagnosing and assessing conditions such as bladder outlet obstruction, bladder dysfunction, incomplete bladder emptying, incontinence, and urinary tract blockages caused by benign prostatic hyperplasia (BPH) and urethral strictures.Pre-Test Instructions:Before a uroflowmetry test, patients are typically advised to drink...
Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response01:15

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Circadian rhythms are cyclic changes that are crucial in plasma drug concentrations. Various standard circadian parameters, including core body temperature, heart rate, and other cardiovascular factors, directly impact disease states and the therapeutic response to drug therapy.
The time of drug administration is an important factor to consider, as it can influence the toxic dose of a drug. For example, a study conducted by Prins et al. in 1997 examined the effects of the timing of...
Physiology of Urine Formation01:24

Physiology of Urine Formation

Urine formation is an essential function of the human body. It plays a critical role in maintaining homeostasis by regulating the volume and composition of body fluids. The kidneys, the primary organs involved in this process, filter blood to remove waste products and excess substances, ultimately producing urine.
Glomerular Filtration
The first stage in urine formation is glomerular filtration. Each kidney contains approximately 1 million nephrons, the functional units of filtration, with a...
Disorders of the Urinary System01:20

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The urinary system is responsible for eliminating waste and excess fluids from the body. However, disorders of the urinary system can arise due to various reasons like infections, stress, age, congenital abnormalities, and lifestyle.
Urinary tract infections (UTIs) are one of the most common urinary system disorders. They are caused by bacteria that enter the urethra and can spread to the bladder resulting in cystitis. Pyelonephritis is the result of a UTI that has ascended to the level of the...

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Related Experiment Video

Updated: Jun 3, 2026

Real-Time Void Spot Assay
06:39

Real-Time Void Spot Assay

Published on: February 10, 2023

Circadian rhythms in voiding function and dysfunction.

Sehyung Cho1, Dong-Hee Han, Dong-Hee Kim

  • 1Department of Physiology, Neurodegeneration Control Research Center, Kyung Hee University School of Medicine, Seoul, Korea.

International Neurourology Journal
|April 7, 2011
PubMed
Summary

Circadian rhythms influence daily fluid intake and urine production. Further research is needed to understand the underlying molecular mechanisms controlling these bodily functions.

Keywords:
CircadianClockworkDiurnalSleepVoiding

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Area of Science:

  • Physiology
  • Chronobiology
  • Urology

Background:

  • Circadian rhythms in fluid balance are established in humans and rodents.
  • The precise mechanisms regulating these rhythms, particularly voiding function, remain largely unknown.

Purpose of the Study:

  • To explore the potential role of molecular clockwork in controlling circadian rhythms of voiding function.
  • To highlight the need for further investigation into the circadian control of urinary function and dysfunction.

Main Methods:

  • This study is a review and conceptual analysis.
  • It synthesizes current knowledge on circadian rhythms and molecular clock mechanisms.

Main Results:

  • Elucidation of molecular clockwork provides a framework for understanding circadian control of physiological processes.
  • New opportunities exist to investigate the link between molecular clocks and voiding function.

Conclusions:

  • Understanding the molecular basis of circadian rhythms in fluid balance and voiding is crucial.
  • Further research into circadian control of urinary function is warranted and requires attention from the scientific community.