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Three and Four-Dimensional Visualization and Analysis Approaches to Study Vertebrate Axial Elongation and Segmentation

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Calcium signaling: a common thread in vertebrate left-right axis development.

Adam Langenbacher¹, Jau-Nian Chen

¹Department of Molecular, Cell and Developmental Biology, University of California, Los Angeles, CA 90095, USA.

Developmental Dynamics : an Official Publication of the American Association of Anatomists

|September 16, 2008

Summary

Establishing the left-right axis in vertebrate development is crucial for organ positioning. This review details diverse pathways, including nodal signaling and calcium

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Area of Science:

Developmental Biology
Cellular Signaling
Organogenesis

Background:

Left-right axis establishment is vital for vertebrate organ positioning and function.
Nodal signaling is a conserved pathway critical for left-right axis specification.
Diverse upstream regulatory mechanisms exist across model organisms.

Purpose of the Study:

To review diverse pathways regulating the break of left-right symmetry.
To explore the multifaceted roles of calcium in vertebrate left-right axis specification.

Main Methods:

Literature review of developmental biology studies.
Analysis of conserved signaling pathways.
Focus on calcium's role in symmetry breaking.

Main Results:

Identified diverse upstream mechanisms influencing nodal signaling.
Highlighted the critical and varied roles of calcium ions.
Summarized key pathways involved in breaking left-right symmetry.

Conclusions:

Left-right axis specification involves complex, conserved pathways.
Calcium signaling plays a pivotal role in vertebrate left-right axis determination.
Understanding these mechanisms is key to comprehending normal organ development.