Quantification of Cerebral Vascular Architecture using Two-photon Microscopy in a Mouse Model of HIV-induced Neuroinflammation

Overview

This paper describes a method by which the vascular architecture in the brain can be quantified using in vivo and ex vivo two-photon microscopy. The overall goal of this procedure is to quantify changes in the cortical capillary networks after prolonged exposure to the HIV virotoxin, tat.

Key Study Components

Area of Science

• Neuroscience
• Vascular biology
• Neurocognitive disorders

Background

• This method helps examine key changes in cortical capillary morphology.
• It may contribute to the pathogenesis of HIV associated neurocognitive disorders.
• The technique allows for physiologically accurate quantification of multiple capillary morphological parameters.
• It can also be applied to other diseases with vascular changes, such as Alzheimer's disease.

Purpose of Study

• To quantify changes in cortical capillary networks.
• To investigate the effects of the HIV virotoxin, tat, on capillary morphology.
• To provide insights into the pathogenesis of HIV associated neurocognitive disorders.

Methods Used

• In vivo and ex vivo two-photon microscopy.
• Application of artificial tear gel to the eyes of anesthetized mice.
• Quantification of capillary morphological parameters.
• Analysis of cortical capillary networks.

Main Results

• Physiologically accurate quantification of capillary parameters was achieved.
• Significant changes in capillary morphology were observed after exposure to the HIV virotoxin.
• The method provided insights into vascular changes associated with neurocognitive disorders.
• Potential applicability to other diseases was noted.

Conclusions

• The method is effective for studying vascular architecture in the brain.
• It can enhance understanding of HIV associated neurocognitive disorders.
• Future applications may extend to other neurodegenerative diseases.

Frequently Asked Questions