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Related Experiment Video

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A Method for Remotely Silencing Neural Activity in Rodents During Discrete Phases of Learning

A Method for Remotely Silencing Neural Activity in Rodents During Discrete Phases of Learning

Published on: June 22, 2015

Handless, footless fetus.

Shubha R Phadke¹, K M Girisha, Ashwin Dalal

¹Department of Medical Genetics, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.

Clinical Dysmorphology

|September 8, 2006

Summary

This study describes a fetus with symmetrical limb deficiency, a rare congenital condition. The observed defects are similar to those seen in animal models lacking the apical ectodermal ridge, suggesting a shared developmental pathway.

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Area of Science:

Developmental biology
Congenital disorders
Teratology

Background:

Limb development is a complex process regulated by signaling centers.
The apical ectodermal ridge (AER) is crucial for distal limb outgrowth.

Observation:

A fetus presented with symmetrical terminal transverse limb deficiency.
This condition involves the absence of distal parts of the limbs.

Findings:

The observed limb defects in the fetus mirror those in animal models with experimentally removed AER.
This suggests a potential disruption of AER signaling in human limb malformations.

Implications:

Understanding the genetic and molecular basis of AER function is critical for diagnosing and potentially treating limb deficiencies.
Further research into human AER development can elucidate mechanisms of congenital limb malformations.