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Updated: Jun 8, 2026

Fluorescent Calcium Imaging and Subsequent In Situ Hybridization for Neuronal Precursor Characterization in Xenopus laevis

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Fast calcium waves.

Lionel F Jaffe¹

¹The Marine Biological Laboratory, Woods Hole, MA, USA. ljaffe@mbl.edu

|October 2, 2010

Summary

Fast calcium waves, occurring at 3-30μm/s, are widespread across many organisms. These waves, possibly driven by reaction-diffusion mechanisms, play roles in development, cellular movement, and disease, including cancer initiation.

Area of Science:

Biophysics
Cell Biology
Developmental Biology

Background:

Calcium waves exhibit diverse propagation speeds across biological systems.
Previous research has not comprehensively categorized non-fertilization calcium waves.
Understanding calcium wave mechanisms is crucial for various biological processes.

Purpose of the Study:

To define and characterize the fast speed range of non-fertilization calcium waves.
To investigate the prevalence and potential mechanisms of fast calcium waves across taxa.
To explore the functional implications of fast calcium waves in development and disease.

Main Methods:

Compilation and analysis of 181 documented cases of non-fertilization calcium waves.
Temperature correction to a standard of 20°C for speed comparisons.

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Literature review to identify proposed mechanisms and biological roles.

Main Results:

Fast calcium waves are defined as 3-30μm/s at 20°C.
These waves are observed in diverse taxa, from cyanobacteria to mammals, excluding bacteria, higher plants, and fungi.
Approximately two-thirds of observed speeds fall between 12 and 24μm/s.
A reaction-diffusion mechanism involving calcium-induced calcium release along the endoplasmic reticulum is proposed for eukaryotes.

Conclusions:

Fast calcium waves represent a conserved phenomenon with a common reaction-diffusion mechanism in eukaryotes.
Proposed roles include driving cyanobacterial gliding, embryonic development, cellular coordination, and brain injury responses.
Fast calcium waves may contribute to cancer initiation in chronic injuries prior to genetic damage.