Circadian Rhythms: Implications for Health and Disease
Related Experiment Video
Updated: Jan 22, 2026

In Vitro Bioluminescence Assay to Characterize Circadian Rhythm in Mammary Epithelial Cells
Published on: September 28, 2017
Sabra M Abbott1, Phyllis C Zee2
1Department of Neurology, Northwestern University Feinberg School of Medicine, 710 North Lake Shore Drive, Abbott Hall 524, Chicago, IL 60611, USA.
Abstract:
Circadian rhythms are present in nearly all organisms studied, and are present throughout the human body. The proper coordination of these rhythms, both within the body, and with respect to the environment appears to be important for overall health. This article reviews the available data looking at the association between circadian dysregulation and cardiometabolic, neurologic, and neurodegenerative disease risk. In addition we discuss the limited but growing evidence supporting the use of circadian-based interventions to improve overall health.
Related Concept Videos
Circadian Rhythms and Gene Regulation
Chronopharmacokinetics: Circadian Rhythms and Influence on Drug Response
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...
Pulse rhythm
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
ECG Interpretation of Rhythms
Components of the Electrocardiogram
The primary components of a normal ECG waveform in Normal sinus rhythm(NSR) include the P wave, PR interval, QRS complex, ST segment, T wave, and occasionally a U wave.
ECG waveforms are divided by vertical and horizontal lines at standard intervals.
The horizontal axis measures time and rate, and the vertical axis measures amplitude or voltage....
Electrophysiology of Normal Cardiac Rhythm

