[Synaptic plasticity of the human cerebral cortex in hypoxia (a morphometric study)]

Area of Science:

• Neuroscience
• Neuroanatomy
• Pathology

Background:

• Brain tumors and intracranial hypertension can cause cerebral hypoxia.
• Understanding synaptic plasticity is crucial for brain function under stress.

Purpose of the Study:

• To investigate synaptic architectonics in the neocortex molecular layer of patients with brain tumors and intracranial hypertension.
• To explore the brain's adaptive mechanisms to hypoxia.

Main Methods:

• Morphometric analysis of synaptic structures.
• Study conducted on nine patients with varying degrees of intracranial hypertension and hypoxia.

Main Results:

• Synapses exhibit significant plastic properties, including hypertrophy of active zones.
• Evidence of new interneuronal link formation was observed.
• Synaptic reorganization was identified as a key compensatory mechanism.

Conclusions:

• The human brain demonstrates remarkable synaptic plasticity in response to hypoxia.
• Reorganization of synaptic architectonics is vital for maintaining cerebral functions under pathological conditions.